Boris Craterlet Lies in West Central Mare Imbrium on Lunar Near Side

Summary: Boris Craterlet lies in the west central Mare Imbrium on the lunar near side to the east of break shared by Mare Imbrium and Oceanus Procellarum.

Detail of Near Side Shaded Relief and Color-Coded Topography Map shows Boris Craterlet's (lower center) Delisle Crater neighborhood in lunar near side's west central Mare Imbrium: USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature

Boris Craterlet lies in the west central Mare Imbrium on the lunar near side to the east of the highland break that distinguishes the joining of west central Mare Imbrium with east central Oceanus Procellarum on the northwestern quadrant.

Boris is centered at 30.53 degrees north latitude, minus 33.5 degrees west longitude, according to the International Astronomical Union's (IAU) Gazetteer of Planetary Nomenclature. The northern hemisphere crater establishes its northernmost and southernmost latitudes at 30.56 degrees north and 30.51 degrees north, respectively. It finds its easternmost and westernmost longitudes at minus 33.47 degrees west and minus 33.53 degrees west, respectively. Boris has a diameter of 1.73 kilometers.

Boris Craterlet is positioned in the west central Mare Imbrium ("Sea of Showers"). It lies to the east of the highland break that joins eastern central Oceanus Procellarum ("Ocean of Storms") with west central Mare Imbrium. The two neighbors rank as the moon's two largest dark, basaltic plains. Lunar maria (Latin: mare, "sea"; maria, "seas") are defined as ". . . low albedo, relatively smooth plain, generally of large extent" by the Gazetteer's Descriptor Terms (Feature Types) page. Procellarum's immensity qualifies it for the unique category of oceanus, which denotes "A very large dark area on the moon."

Oceanus Procellarum is centered at 20.67 degrees north latitude, minus 56.68 degrees west longitude. Its northernmost and southernmost latitudes stretch to 57.43 degrees north and minus 16.27 degrees south, respectively. Its easternmost and westernmost longitudes extend to minus 26.85 degrees west and minus 81.08 degrees west, respectively. Oceanus Procellarum's diameter spans 2,592.24 kilometers.

Mare Imbrium is centered at 34.72 degrees north latitude, minus 14.91 degrees west longitude. Its northernmost and southernmost latitudes tap 51.46 degrees north and 15.23 degrees north, respectively. Its easternmost and westernmost longitudes touch 8.56 degrees east and minus 38.36 degrees west, respectively. Mare Imbrium's diameter spans 1,145.53 kilometers.

Delisle, Gaston and Linda occur as named craters lying nearest to Boris in Mare Imbrium. Closest neighbor Linda lies to the northeast of Boris. Next closest neighbor Gaston resides to the northwest. Delisle is located to the southwest of Boris.

Delisle Crater is centered at 29.98 degrees north latitude, minus 34.68 degrees west longitude. The northwestern quadrant crater's northernmost and southernmost latitudes occur at 30.39 degrees north and 29.57 degrees north, respectively. It posts easternmost and westernmost longitudes of minus 34.2 degrees west and minus 35.15 degrees west, respectively. Delisle Crater's diameter measures 24.83 kilometers.

Linda is centered at 30.69 degrees north latitude, minus 33.38 degrees west longitude. It obtains northernmost and southernmost latitudes of 30.71 degrees north and 30.67 degrees north, respectively. It places its easternmost and westernmost longitudes at minus 33.35 degrees west and minus 33.4 degrees west, respectively. Linda has a diameter of 1.11 kilometers.

Gaston is centered at 30.88 degrees north latitude, minus 33.96 degrees west longitude. It posts northernmost and southernmost latitudes of 30.91 degrees north and 30.84 degrees north, respectively. It marks its easternmost and westernmost longitudes at minus 33.92 degrees west and minus 34 degrees west, respectively. Gaston has a diameter of 2.02 kilometers.

Rupes Boris slopes in western proximity to Boris Craterlet. The scarp's northernmost and southernmost latitudes of 30.82 degrees north and 30.56 degrees north, respectively. It registers easternmost and westernmost longitudes of minus 33.52 degrees west and minus 33.52 degrees west, respectivley. Rupes Boris has a diameter of 8.58 kilometers.

Rima Delisle slants across the terrain to the southeast and northeast of Boris. The fissure establishes northernmost and southernmost latitudes of 31.4 degrees north and 30.48 degrees north, respectively. It finds its easternmost and westernmost longitudes at minus 31.78 degrees west and minus 33.14 degrees west, respectively. Rima Delisle's diameter measures 57.6 kilometers.

Boris numbers among 95 minor features identified with first-name designations on lunar topophotomaps prepared and published by The Defense Mapping Agency (DMA) for the National Aeronautics and Space Administration (NASA). Boris is plotted on NASA Lunar Topophotomap 39B2S2, which was published in September 1976. The map's Names Information lists "Boris, Gaston, Linda, Rupes Boris" as "provisional names pending IAU approval."

The International Astronomical Association approved Boris as the west central Mare Imbrium craterlet's name in 1979. The Gazetteer of Planetary Nomenclature explains Boris as: "Russian male name."

Detail of Lunar Aeronautical Chart (LAC) 39 shows Boris's (center) Delisle Crater neighborhood in lunar near side's west central Mare Imbrium: image credit NASA/GSFC/ASU, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature

Acknowledgment

My special thanks to talented artists and photographers/concerned organizations who make their fine images available on the internet.

Dedication

This post is dedicated to the memory of our beloved blue-eyed brother, Charles, who guided the creation of the Met Opera and Astronomy posts on Earth and Space News. We memorialized our brother in "Our Beloved Blue-Eyed Brother, Charles, With Whom We Are Well Pleased," published on Earth and Space News on Thursday, Nov. 18, 2021, an anniversary of our beloved father's death.

Image credits:

Detail of Near Side Shaded Relief and Color-Coded Topography Map shows Boris Craterlet's (lower center) Delisle Crater neighborhood in lunar near side's west central Mare Imbrium: USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature @ https://planetarynames.wr.usgs.gov/images/moon_nearside.pdf

Detail of Lunar Aeronautical Chart (LAC) 39 shows Boris's (center) Delisle Crater neighborhood in lunar near side's west central Mare Imbrium: image credit NASA/GSFC/ASU, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature @ https://planetarynames.wr.usgs.gov/images/Lunar/lac_39_wac.pdf

For further information:

Andersson, Leif E.; and Ewen A. Whitaker. NASA Catalogue of Lunar Nomenclature. NASA Reference Publication 1097. Hampton VA: NASA Scientific and Technical Information Branch, October 1982.
Available via NASA NTRS (NASA Technical Reports Server) @ https://ntrs.nasa.gov/api/citations/19830003761/downloads/19830003761.pdf

Consolmagno, Guy; and Dan M. Davis. Turn Left at Orion. Fourth edition. Cambridge UK; New York NY: Cambridge University Press, 2011.

The Defense Mapping Agency Topographic Center. "Lunar Topophotomap Rupes Boris." National Aeronautics and Space Administration Lunar Topophotomap Edition 1 Sheet 39B2S2 (25). Washington DC: The Defense Mapping Agency Topographic Center, September 1976.
Available @ https://www.lpi.usra.edu/resources/mapcatalog/topophoto/39B2S2/150dpi.jpg

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Boris.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/826

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Delisle.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1472

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Descriptor Terms (Feature Types).” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Documentation.
Available @ https://planetarynames.wr.usgs.gov/DescriptorTerms

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Gaston.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/2112

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Linda.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3406

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mare Imbrium.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3678

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Oceanus Procellarum.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ ttps://planetarynames.wr.usgs.gov/Feature/4395

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Rima Delisle.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/5054

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Rupes Boris.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/5225

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Target: The Moon.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon.
Available @ https://planetarynames.wr.usgs.gov/Page/MOON/target

Levy, David H. Skywatching. Revised and updated. San Francisco CA: Fog City Press, 1994.

Marriner, Derdriu. "Akis Craterlet Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 3, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/akis-craterlet-resides-in-southwestern.html

Marriner, Derdriu. "Ann Craterlet Resides in Southeastern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Sep. 7, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/09/ann-craterlet-resides-in-southeastern.html

Marriner, Derdriu. "Annegrit Craterlet Lies in Southwest Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 10, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/annegrit-craterlet-lies-in-southwest.html

Marriner, Derdriu. "Artemis Craterlet Lies in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 17, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/artemis-craterlet-lies-in-southwestern.html

Marriner, Derdriu. "Béla Crater Resides in Southeastern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Sep. 14, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/09/bela-crater-resides-in-southeastern.html

Marriner, Derdriu. "Courtney Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 24, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/courtney-resides-in-southwestern-mare.html

Marriner, Derdriu. "Dag Craterlet Resides in Lacus Felicitatis on Lunar Near Side." Earth and Space News. Wednesday, Sep. 21, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/09/dag-craterlet-resides-in-lacus.html

Marriner, Derdriu. "Dorsum Thera Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, July 27, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/07/dorsum-thera-resides-in-southwestern.html

Marriner, Derdriu. "Isabel Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 31, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/isabel-resides-in-southwestern-mare.html

Marriner, Derdriu. "Julienne Resides in Mare Imbrium's Palus Putredinis on Lunar Near Side." Earth and Space News. Wednesday, Sep. 28, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/09/julienne-resides-in-mare-imbriums-palus.html

Marriner, Derdriu. "Lunar Topophotomap Minor Feature Names Were Approved in 1976 and 1979." Earth and Space News. Wednesday, July 20, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/07/lunar-topophotomap-minor-feature-names.html

The Moon Wiki. “Boris.” The Moon > Lunar Features Alphabetically > B Nomenclature.
Available @ https://the-moon.us/wiki/Boris

The Moon Wiki. “Delisle.” The Moon > Lunar Features Alphabetically > D Nomenclature.
Available @ https://the-moon.us/wiki/Delisle

The Moon Wiki. “Gaston.” The Moon > Lunar Features Alphabetically > G Nomenclature.
Available @ https://the-moon.us/wiki/Gaston

The Moon Wiki. “Linda.” The Moon > Lunar Features Alphabetically > L Nomenclature.
Available @ https://the-moon.us/wiki/Linda

The Moon Wiki. “Mare Imbrium.” The Moon > Lunar Features Alphabetically > I Nomenclature.
Available @ https://the-moon.us/wiki/Imbrium,_Mare

The Moon Wiki. "Minor Feature." The Moon > Glossary.
Available @ https://the-moon.us/wiki/Minor_Feature

The Moon Wiki. “Oceanus Procellarum.” The Moon > Lunar Features Alphabetically > P Nomenclature.
Available @ https://the-moon.us/wiki/Oceanus_Procellarum

The Moon Wiki. “Rima Delisle.” The Moon > Lunar Features Alphabetically > D Nomenclature.
Available @ https://the-moon.us/wiki/Rima_Delisle

The Moon Wiki. “Rupes Boris.” The Moon > Lunar Features Alphabetically > B Nomenclature.
Available @ https://the-moon.us/wiki/Rupes_Boris

Moore, Patrick, Sir. Astronomy Encyclopedia: An A-Z Guide to the Universe. New York NY: Oxford University Press, Inc., 2002.

Moore, Patrick, Sir. Philip’s Atlas of the Universe. Revised edition. London UK: Philip’s, 2005.

Wayman, P. (Patrick A.), ed. XVIIth General Assembly -- Transactions of the IAU Vol. XVII B Proceedings of the 17th General Assembly Montreal, Canada, August 14-23, 1979. Washington DC: Association of Universities for Research in Astronomy, Jan. 1, 1980.
Available @ https://www.iau.org/publications/iau/transactions_b/

Courtney Resides in Southwestern Mare Imbrium on Lunar Near Side

Summary: Courtney resides in southwestern Mare Imbrium on the lunar near side to the southwest of Mons La Hire and to the northwest of Euler Crater.

Detail of Near Side Shaded Relief and Color-Coded Topography Map shows Courtney's (upper center) Diophantus-Mons La Hire-Mons Vinogradov-Euler neighborhood in southwestern Mare Imbrium: USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature, Public Domain, via Wikimedia Commons

Courtney resides in southwestern Mare Imbrium on the lunar near side in a northwestern quadrant neighborhood defined by Mons La Hire to the northeast, Diophantus Crater to the northwest, Mons Vinogradov to the southwest and Euler Crater to the southeast.

Courtney is centered at 25.14 degrees north latitude, minus 30.81 degrees west longitude, according to the International Astronomical Union's (IAU) Gazetteer of Planetary Nomenclature. It marks its northernmost and southernmost latitudes at 25.16 degrees north and 25.11 degrees north, respectively. It posts easternmost and westernmost longitudes of minus 30.78 degrees west and minus 30.83 degrees west, respectively. Courtney has a diameter of 1.24 kilometers.

Courtney is positioned near the southwestern edges of Mare Imbrium. Its location places it to the southeast of the highland break where east central Oceanus Procellarum ("Ocean of Storms") meet west central Mare Imbrium ("Sea of Showers").

Mare Imbrium is centered at 34.72 degrees north latitude, minus 14.91 degrees west longitude. The dark, basaltic plain's northernmost and southernmost latitudes stretch to 51.46 degrees north and 15.23 degrees north, respectively. Its easternmost and westernmost longitudes extend to 8.56 degrees east and minus 38.36 degrees west, respectively. Mare Imbrium's diameter spans 1,145.53 kilometers.

Courtney's neighborhood in southwestern Mare Imbrium can be pinpointed by two craters and two mountains. Diophantus Crater and Euler Crater neighbor to the northwest and southeast, respectively, of Courtney. Mons La Hire and Mons Vinogradov lie to the northeast and southwest, respectively, of Courtney.

Diophantus Crater is centered at 27.62 degrees north latitude, minus 34.3 degrees west longitude. The lunar impact crater records northernmost and southernmost latitudes of 27.91 degrees north and 27.33 degrees north, respectively. It registers easternmost and westernmost longitudes of minus 33.97 degrees west and minus 34.62 degrees west, respectively. Diophantus Crater's diameter measures 17.57 kilometers.

Euler Crater is centered at 23.26 degrees north latitude, minus 29.18 degrees west longitude. The lunar impact crater obtains northernmost and southernmost latitudes of 23.69 degrees north and 22.83 degrees north, respectively. It places its easternmost and westernmost longitudes at minus 28.71 degrees west and minus 29.65 degreees west, respectively. Euler Crater's diameter measures 26.03 kilometers.

Mons La Hire's peaks rise above Mare Imbrium's dark plain to the east of Diophantus Crater. The mountain lies to the northeast of Courtney, Euler Crater and Mons Vinogradov.

Mons La Hire is centered at 27.66 degrees north latitude, minus 25.51 degrees west longitude. The mountain's northernmost and southernmost latitudes are reached at 27.88 degrees north and 27.49 degrees north, respectively. Easternmost and westernmost longitudes are established at minus 25.12 degrees west and minus 25.95 degrees west, respectively. Mons La Hire's diameter measures 21.71 kilometers.

Mons Vinogradov lies to the southwest of Courtney and Euler Crater. Prior to official name approval in 1979, the massif was known as Mons Euler.

Mons Vinogradov is centered at 22.35 degrees north latitude, minus 32.52 degrees west longitude. The massif registers northernmost and southernmost latitudes of 22.81 degrees north and 21.92 degrees north, respectively. The compact group of peaks records easternmost and westernmost longitudes of minus 31.96 degrees west and minus 32.99 degrees west, respectively. Mons Vinogradov's diameter measures 28.73 kilometers.

Three different geological features radiate in proximity to Courtney. Rima Zahia lies to the east. Catena Yuri is positioned to the southeast. Dorsum Thera occurs to the southwest.

Rima Zahia neighbors as the closest of the three named features to Courtney. The fissure displays a rough north-south trend.

Rima Zahia is centered at 25.02 degrees north latitude, minus 30.46 degrees west longitude. The fissure marks its northernmost and southernmost latitudes at 25.25 degrees north and 24.79 degrees north, respectively. It posts easternmost and westernmost longitudes of minus 30.36 degrees west and minus 30.49 degrees west, respectively. Rima Zahia has a diameter of 15.24 kilometers.

Catena Yuri is found to the south of Rima Zahia. The chain of craters trends northwest-southeast.

Catena Yuri is centered at 24.41 degrees north latitude, minus 30.38 degrees west longitude. The craterous chain maintains northernmost and southernmost latitudes at 24.47 degrees north and 24.35 degrees north, respectively. The chain's easternmost and westernmost longitudes are listed as minus 30.34 degrees west and minus 30.43 degrees west, respectively. Catena Yura has a diameter of 4.52 kilometers.

Dorsum Thera is located to the west of Catena Yuri. The ridge presents a fairly north-south alignment.

Dorsum Thera is centered at 24.4 degrees north latitude, minus 31.42 degrees west longitude. The dorsum (Latin: "back, ridge") achieves its northernmost and southernmost latitudes at 24.51 degrees north and 24.29 degrees north, respectively. The ridge identifies its easternmost and westernmost longitudes as minus 31.38 degrees west and minus 31.47 degrees west, respectively. Dorsum Thera's diameter measures 7.25 kilometers.

Courtney numbers among 95 minor features identified with first-name designations on lunar topophotomaps prepared and published by The Defense Mapping Agency (DMA) for the National Aeronautics and Space Administration (NASA). Courtney is plotted on NASA Lunar Topophotomap 39B3S1, which was published in June 1974. The map's Names Identification lists "Courtney, Thera, Yuri, Zahia "as unofficial names used "only for the identification of features on this map."

The International Astronomical Union approved Courtney as the craterlet's official name in 1976. The Gazetteer of Planetary Nomenclature identifies Courtney as: "English male name."

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Detail of Lunar Aeronautical Chart (LAC) 39 shows Courtney's (center right) Diophantus Crater-Mons Vinogradov neighborhood in southwestern Mare Imbrium: image credit NASA/GSFC/ASU, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature

Acknowledgment

My special thanks to talented artists and photographers/concerned organizations who make their fine images available on the internet.

Dedication

This post is dedicated to the memory of our beloved blue-eyed brother, Charles, who guided the creation of the Met Opera and Astronomy posts on Earth and Space News. We memorialized our brother in "Our Beloved Blue-Eyed Brother, Charles, With Whom We Are Well Pleased," published on Earth and Space News on Thursday, Nov. 18, 2021, an anniversary of our beloved father's death.

Image credits:

Detail of Near Side Shaded Relief and Color-Coded Topography Map shows Courtney's (upper center) Diophantus-Mons La Hire-Mons Vinogradov-Euler neighborhood in southwestern Mare Imbrium: USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature, Public Domain, via Wikimedia Commons @ https://commons.wikimedia.org/wiki/File:Near_side_39.jpg

Detail of Lunar Aeronautical Chart (LAC) 39 shows Courtney's (center right) Diophantus Crater-Mons Vinogradov neighborhood in southwestern Mare Imbrium: image credit NASA/GSFC/ASU, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature @ https://planetarynames.wr.usgs.gov/images/Lunar/lac_39_wac.pdf

For further information:

Andersson, Leif E.; and Ewen A. Whitaker. NASA Catalogue of Lunar Nomenclature. NASA Reference Publication 1097. Hampton VA: NASA Scientific and Technical Information Branch, October 1982.
Available via NASA NTRS (NASA Technical Reports Server) @ https://ntrs.nasa.gov/api/citations/19830003761/downloads/19830003761.pdf

Consolmagno, Guy; and Dan M. Davis. Turn Left at Orion. Fourth edition. Cambridge UK; New York NY: Cambridge University Press, 2011.

The Defense Mapping Agency Topographic Center. "Lunar Topophotomap Zahia." National Aeronautics and Space Administration Lunar Topophotomap Edition 1 Sheet 39B3S1 (50). Washington DC: The Defense Mapping Agency Topographic Center, June 1974.
Available @ https://www.lpi.usra.edu/resources/mapcatalog/topophoto/39B3S1/

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Catena Yuri.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1074

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Courtney.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1325

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Descriptor Terms (Feature Types).” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Documentation.
Available @ https://planetarynames.wr.usgs.gov/DescriptorTerms

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Diophantus.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1543

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Dorsum Thera.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1623

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Euler.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1866

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mare Imbrium.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3678

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mons La Hire.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3988

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mons Vinogradov.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3996

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Rima Zahia.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/5089

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Target: The Moon.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon.
Available @ https://planetarynames.wr.usgs.gov/Page/MOON/target

Levy, David H. Skywatching. Revised and updated. San Francisco CA: Fog City Press, 1994.

Marriner, Derdriu. "Akis Craterlet Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 3, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/akis-craterlet-resides-in-southwestern.html

Marriner, Derdriu. "Annegrit Craterlet Lies in Southwest Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 10, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/annegrit-craterlet-lies-in-southwest.html

Marriner, Derdriu. "Artemis Craterlet Lies in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 17, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/artemis-craterlet-lies-in-southwestern.html

Marriner, Derdriu. "Dorsum Thera Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, July 27, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/07/dorsum-thera-resides-in-southwestern.html

Marriner, Derdriu. "Lunar Topophotomap Minor Feature Names Were Approved in 1976 and 1979." Earth and Space News. Wednesday, July 20, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/07/lunar-topophotomap-minor-feature-names.html

The Moon Wiki. “Catena Yuri.” The Moon > Lunar Features Alphabetically > Y Nomenclature.
Available @ https://the-moon.us/wiki/Catena_Yuri

The Moon Wiki. “Courtney.” The Moon > Lunar Features Alphabetically > C Nomenclature.
Available @ https://the-moon.us/wiki/Courtney

The Moon Wiki. “Diophantus.” The Moon > Lunar Features Alphabetically > A Nomenclature.
Available @ https://the-moon.us/wiki/Diophantus

The Moon Wiki. “Dorsum Thera.” The Moon > Lunar Features Alphabetically > T Nomenclature.
Available @ https://the-moon.us/wiki/Dorsum_Thera

The Moon Wiki. “Euler.” The Moon > Lunar Features Alphabetically > E Nomenclature.
Available @ https://the-moon.us/wiki/Euler

The Moon Wiki. “Mare Imbrium.” The Moon > Lunar Features Alphabetically > I Nomenclature.
Available @ https://the-moon.us/wiki/Imbrium,_Mare

The Moon Wiki. "Minor Feature." The Moon > Glossary.
Available @ https://the-moon.us/wiki/Minor_Feature

The Moon Wiki. “Mons La Hire.” The Moon > Lunar Features Alphabetically > L Nomenclature.
Available @ https://the-moon.us/wiki/Mons_La_Hire

The Moon Wiki. “Mons Vinogradov.” The Moon > Lunar Features Alphabetically > V Nomenclature.
Available @ https://the-moon.us/wiki/Mons_Vinogradov

The Moon Wiki. “Rima Zahia.” The Moon > Lunar Features Alphabetically > Z Nomenclature.
Available @ https://the-moon.us/wiki/Rima_Zahia

Moore, Patrick, Sir. Astronomy Encyclopedia: An A-Z Guide to the Universe. New York NY: Oxford University Press, Inc., 2002.

Moore, Patrick, Sir. Philip’s Atlas of the Universe. Revised edition. London UK: Philip’s, 2005.

Müller, E. (Edith A.); and A. (Arnost), Jappel, eds. XVIth General Assembly -- Transactions of the IAU Vol. XVI B Proceedings of the 16th General Assembly Grenoble, France, August 24-September 21, 1976. Washington DC: Association of Universities for Research in Astronomy, Jan. 1, 1977.
Available @ https://www.iau.org/publications/iau/transactions_b/

Artemis Craterlet Lies in Southwestern Mare Imbrium on Lunar Near Side

Summary: Artemis Craterlet lies in southwestern Mare Imbrium on the lunar near side in a tight string with northern neighbor Felix and southern neighbor Verne.

Detail of Near Side Shaded Relief and Color-Coded Topography Map shows Artemis Craterlet's (upper right) Mons La Hire-Euler neighborhood in southwestern Mare Imbrium: USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature, Public Domain, via Wikimedia Commons

Artemis Craterlet lies in southwestern Mare Imbrium on the lunar near side in a tight trio with Felix as northern neighbor and Verne as southern neighbor.

Artemis is centered at 25.03 degrees north latitude, minus 25.36 degrees west longitude, according to the International Astronomical Union's (IAU) Gazetteer of Planetary Nomenclature. The northern hemisphere craterlet marks its northernmost and southernmost latitudes at 25.07 degrees north and 25 degrees north, respectively. It posts easternmost and westernmost longitudes of minus 25.31 degrees west and minus 25.36 degrees west, respectively. Artemis has a diameter of 2.28 kilometers.

Artemis resides in southwestern Mare Imbrium. Artemis lies to the southeast of the highland break that marks the joining of western Mare Imbrium with eastern Oceanus Procellarum. Mare Imbrium stretches across the moon's prime meridian, measured at 0 degrees of longitude, to occupy the near side's northwestern and northeastern quadrants.

Mare Imbrium ("Sea of Showers") is centered at 34.72 degrees north latitude, minus 14.91 degrees west longitude. Its northernmost and southernmost latitudes stretch to 51.46 degrees north and 15.23 degrees north, respectively. Its easternmost and westernmost longitudes extend to 8.56 degrees east and minus 38.36 degrees west, respectively. Mare Imbrium's diameter spans 1,145.53 kilometers.

Artemis serves as an off-center midpoint marker in a trio of craterlets in southwestern Mare Imbrium. Felix lies to the northwest of Artemis. Verne neighbors to the southwest of Artemis.

Felix is centered at 25.09 degrees north latitude, minus 25.38 degrees west longitude. It establishes its northernmost and southernmost latitudes at 25.11 degrees north and 25.06 degrees north, respectively. It finds its easternmost and westernmost longitudes at minus 25.35 degrees west and minus 25.4 degrees west, respectively. Felix has a diameter of 1.45 kilometers.

Verne is centered at 24.95 degrees north latitude, minus 25.38 degrees west longitude. It obtains northernmost and southernmost latitudes of 24.98 degrees north and 24.93 degrees north, respectively. It places its easternmost and westernmost longitudes at minus 25.35 degrees west and minus 25.41 degrees west, respectively. Verne has a diameter of 1.54 kilometers.

Mons La Hire lies to the north of the trio of Felix, Artemis and Verne. Mons La Hire's peaks form an isolated protrusion among scatterings of craterlets in the mountain's surrounding terrain.

Mons La Hire is centered at 27.66 degrees north latitude, minus 25.51 degrees west longitude. The mountain places its northernmost and southernmost latitudes at 27.88 degrees north and 27.49 degrees north, respectively. Easternmost and westernmost longitudes occur at minus 25.12 degrees west and minus 25.95 degrees west, respectively. Mons La Hire's diameter measures 21.71 kilometers.

Euler H lies to the west as the nearest named westerly crater to the trio of Felix, Artemis and Verne. Euler H places as the northernmost of the Euler Crater system's six satellites.

Euler H is centered at 25.33 degrees north latitude, minus 28.57 degrees west longitude. It finds its northernmost and southernmost latitudes at 25.39 degrees north and 25.26 degrees north, respectively. It establishes its easternmost and westernmost longitudes at minus 28.5 degrees west and minus 28.64 degrees west, respectively. Euler H's diameter measures 3.93 kilometers.

Euler Crater occurs as the nearest named crater to the southwest of Artemis. Euler H lies to the northeast of its parent crater.

Euler Crater is centered at 23.26 degrees north latitude, minus 29.18 degrees west longitude. The northern hemisphere crater registers northernmost and southernmost latitudes of 23.69 degrees north and 22.83 degrees north, respectively. It registers easternmost and westernmost longitudes of minus 28.71 degrees west and minus 29.65 degrees west, respectively. Euler Crater's diameter measures 26.03 kilometers.

Lambert W lies to the southeast as the nearest named easterly crater to the trio of Felix, Artemis and Verne. Lambert W is positioned as the westernmost of the Lambert Crater system's five satellites.

Lambert W is centered at 24.49 degrees north latitude, minus 22.66 degrees west longitude. The Lambert satellite marks its northernmost and southernmost latitudes at 24.53 degrees north and 24.45 degrees north, respectively. It places its easternmost and westernmost longitudes at minus 22.62 degrees west and minus 22.7 degrees west, respectively. Lambert W has a diameter of 2.33 kilometers.

Pytheas W is situated as the nearest named crater to the southeast of Artemis. The Pytheas satellite is sited as the westernmost of the Pytheas Crater system's 15 satellites.

Pytheas W is centered at 21.71 degrees north latitude, minus 23.71 degrees west longitude. The Pytheas satellite's northernmost and southernmost latitudes occur at 21.75 degrees north and 21.66 degrees north, respectively. It obtains its easternmost and westernmost longitudes at minus 23.66 degrees west and minus 23.76 degrees west, respectively. Pytheas W has a diameter of 2.83 kilometers.

Artemis numbers among 95 minor features identified with first-name designations on lunar topophotomaps prepared and published by The Defense Mapping Agency (DMA) for the National Aeronautics and Space Administration (NASA). Artemis is plotted on NASA Lunar Topophotomap 40A4S1. The map's Names Information lists "Artemis, Felix, Verne" as unofficial names used "only for the identification of features on this map."

The International Astronomical Union approved Artemis as the craterlet's official name in 1976. The Gazetteer of Planetary Nomenclature explains Artemis as a "Greek female first name." The Gazetteer also notes that previous origin information of Artemis as "Greek Moon goddess" was changed to the current identification on June 30, 2010.

Detail of Lunar Aeronautical Chart (LAC) 40 shows Artemis Craterlet's (center right) Mons La Hire-Euler-Lambert neighborhood in southwestern Mare Imbrium: image credit NASA/GSFC/ASU, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature

Acknowledgment

My special thanks to talented artists and photographers/concerned organizations who make their fine images available on the internet.

Dedication

This post is dedicated to the memory of our beloved blue-eyed brother, Charles, who guided the creation of the Met Opera and Astronomy posts on Earth and Space News. We memorialized our brother in "Our Beloved Blue-Eyed Brother, Charles, With Whom We Are Well Pleased," published on Earth and Space News on Thursday, Nov. 18, 2021, an anniversary of our beloved father's death.

Image credits:

Detail of Near Side Shaded Relief and Color-Coded Topography Map shows Artemis Craterlet's (upper right) Mons La Hire-Euler neighborhood in southwestern Mare Imbrium: USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature, Public Domain, via Wikimedia Commons @ https://commons.wikimedia.org/wiki/File:Near_side_39.jpg

Detail of Lunar Aeronautical Chart (LAC) 40 shows Artemis Craterlet's (center right) Mons La Hire-Euler-Lambert neighborhood in southwestern Mare Imbrium: image credit NASA/GSFC/ASU, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature @ https://planetarynames.wr.usgs.gov/images/Lunar/lac_40_wac.pdf

For further information:

Andersson, Leif E.; and Ewen A. Whitaker. NASA Catalogue of Lunar Nomenclature. NASA Reference Publication 1097. Hampton VA: NASA Scientific and Technical Information Branch, October 1982.
Available via NASA NTRS (NASA Technical Reports Server) @ https://ntrs.nasa.gov/api/citations/19830003761/downloads/19830003761.pdf

Consolmagno, Guy; and Dan M. Davis. Turn Left at Orion. Fourth edition. Cambridge UK; New York NY: Cambridge University Press, 2011.

The Defense Mapping Agency Topographic Center. "Lunar Topophotomap Artemis." National Aeronautics and Space Administration Lunar Topophotomap Edition 2 Sheet 40A4S1 (10). Washington DC: The Defense Mapping Agency Topographic Center, n.d.
Available @ https://www.lpi.usra.edu/resources/mapcatalog/topophoto/40A4S1/150dpi.jpg

Elger, Thomas Gwyn. “Lahire.” The Moon, A Full Description and Map of Its Principal Physical Features: 158. London UK: George Philip & Son, 1895.
Available via Internet Archive @ https://archive.org/details/moonfulldescript00elgeuoft/page/158/mode/1up

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Artemis.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/399

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Descriptor Terms (Feature Types).” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Documentation.
Available @ https://planetarynames.wr.usgs.gov/DescriptorTerms

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Euler H.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/6358

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Euler.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1866

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Felix.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1934

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “La Hire A.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/10496

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “La Hire B.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/10497

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Lambert W.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/10578

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mare Imbrium.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3678

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mons La Hire.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3988

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Pytheas W.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/12413

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Target: The Moon.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon.
Available @ https://planetarynames.wr.usgs.gov/Page/MOON/target

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Verne.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/6358

Levy, David H. Skywatching. Revised and updated. San Francisco CA: Fog City Press, 1994.

Marriner, Derdriu. "Akis Craterlet Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 3, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/akis-craterlet-resides-in-southwestern.html

Marriner, Derdriu. "Annegrit Craterlet Lies in Southwest Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 10, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/annegrit-craterlet-lies-in-southwest.html

Marriner, Derdriu. "Dorsum Thera Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, July 27, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/07/dorsum-thera-resides-in-southwestern.html

Marriner, Derdriu. "Lunar Topophotomap Minor Feature Names Were Approved in 1976 and 1979." Earth and Space News. Wednesday, July 20, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/07/lunar-topophotomap-minor-feature-names.html

The Moon Wiki. “Artemis.” The Moon > Lunar Features Alphabetically > A Nomenclature.
Available @ https://the-moon.us/wiki/Artemis

The Moon Wiki. “Euler.” The Moon > Lunar Features Alphabetically > E Nomenclature.
Available @ https://the-moon.us/wiki/Euler

The Moon Wiki. “Felix.” The Moon > Lunar Features Alphabetically > F Nomenclature.
Available @ https://the-moon.us/wiki/Felix

The Moon Wiki. “Lambert.” The Moon > Lunar Features Alphabetically > L Nomenclature.
Available @ https://the-moon.us/wiki/Lambert

The Moon Wiki. “Mare Imbrium.” The Moon > Lunar Features Alphabetically > I Nomenclature.
Available @ https://the-moon.us/wiki/Imbrium,_Mare

The Moon Wiki. "Minor Feature." The Moon > Glossary.
Available @ https://the-moon.us/wiki/Minor_Feature

The Moon Wiki. “Mons La Hire.” The Moon > Lunar Features Alphabetically > L Nomenclature.
Available @ https://the-moon.us/wiki/Mons_La_Hire

The Moon Wiki. “Pytheas.” The Moon > Lunar Features Alphabetically > P Nomenclature.
Available @ https://the-moon.us/wiki/Pytheas

The Moon Wiki. “Verne.” The Moon > Lunar Features Alphabetically > V Nomenclature.
Available @ https://the-moon.us/wiki/Verne

Moore, Patrick, Sir. Astronomy Encyclopedia: An A-Z Guide to the Universe. New York NY: Oxford University Press, Inc., 2002.

Moore, Patrick, Sir. Philip’s Atlas of the Universe. Revised edition. London UK: Philip’s, 2005.

Müller, E. (Edith A.); and A. (Arnost), Jappel, eds. XVIth General Assembly -- Transactions of the IAU Vol. XVI B Proceedings of the 16th General Assembly Grenoble, France, August 24-September 21, 1976. Washington DC: Association of Universities for Research in Astronomy, Jan. 1, 1977.
Available @ https://www.iau.org/publications/iau/transactions_b/

Annegrit Craterlet Lies in Southwest Mare Imbrium on Lunar Near Side

Summary: Annegrit Craterlet lies in southwest Mare Imbrium on the lunar near side with two named craterlets to the northwest and Mons La Hire to the south.

Detail of Near Side Shaded Relief and Color-Coded Topography Map shows Annegrit's Mons La Hire-Dorsum Zirkel neighborhood in southwestern Mare Imbrium: USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature, Public Domain, via Wikimedia Commons

Annegrit Carterlet lies in southwest Mare Imbrium on the lunar near side with two named craterlets as northwestern neighbors and Mons La Hire as southern neighbor.

Annegrit is centered at 29.43 degrees north latitude, minus 25.64 degrees west longitude, according to the International Astronomical Union's (IAU) Gazetteer of Planetary Nomenclature. The northern hemisphere craterlet establishes its northernmost and southernmost latitudes at 29.45 degrees north and 29.41 degrees north, respectively. It finds its easternmost and westernmost longitudes at minus 25.61 degrees west and minus 25.66 degrees west, respectively. Annegrit's diameter measures 1.29 kilometers.

Annegrit is located in southwestern Mare Imbrium. Annegrit lies to the east-southeast of the highland break that marks the joining of western Mare Imbrium with eastern Oceanus Procellarum. Mare Imbrium's terrain extends from the near side's northwestern quadrant, across the moon's prime meridian, 0 degrees of longitude, and spills into the northeastern quadrant.

Mare Imbrium ("Sea of Showers") is centered at 34.72 degrees north latitude, minus 14.91 degrees west longitude. Its northernmost and southernmost latitudes stretch to 51.46 degrees north and 15.23 degrees north, respectively. Its easternmost and westernmost longitudes tap 8.56 degrees east and minus 38.36 degrees west, respectively. Mare Imbrium's diameter spans 1,145.53 kilometers.

Charles and Mavis neighbor to the northwest of Annegrit. Charles lies to the north of Mavis.

Charles is centered at 29.9 degrees north latitude, minus 26.37 degrees west longitude. The craterlet achieves its northernmost and southernmost latitudes at 29.92 degrees north and 29.87 degrees north, respectively. Its easternmost and westernmost longitudes are positioned at minus 26.34 degrees west and minus 26.39 degrees west, respectively. Charles Craterlet diameter measures 1.34 kilometers.

Mavis is centered at 29.76 degrees north latitude, minus 26.36 degrees west longitude. It marks its northernmost and southernmost latitudes at 29.78 degrees north and 29.74 degrees north, respectively. It posts easternmost and westernmost longitudes of minus 26.34 degrees west and minus 26.38 degrees west, respectively. Mavis has a diameter of 1.09 kilometers.

Annegrit lies to the north of Mons La Hire. British selenographer Thomas Gwyn Empy Elger (Oct. 27, 1836-Jan. 9, 1897) described Mons La Hire as a ". . . large bright isolated mountain in the Mare Imbrium. . ." (page 158) in his Victorian era lunar guide, The Moon: A Full Description and Map of Its Principal Physical Features, published in 1895.

Mons La Hire is centered at 27.66 degrees north latitude, minus 25.51 degrees west longitude. The mountain records northernmost and southernmost latitudes of 27.88 degrees north and 27.49 degrees north, respectively. Easternmost and westernmost longitudes register at minus 25.12 degrees west and minus 25.95 degrees west, respectively. Mons La Hire's diameter measures 21.71 kilometers.

Dorsum Zirkel neighbors to the east of Annegrit. The wrinkle ridge slants with a northwest-southeast trend between Annegrit and Mons La Hire. The Gazetteer of Planetary Nomenclature's Descriptor Terms (Feature Types) page defines "dorsum, dorsa" as a "ridge."

Dorsum Zirkel is centered at 29.55 degrees north latitude, minus 24.82 degrees west longitude. The dorsum's northernmost and southernmost latitudes extend to 31.79 degrees north and 27.15 degrees north, respectively. Its easternmost and westernmost longitudes reach minus 22.33 degrees west and minus 27.45 degrees west, respectively. Dorsum Zirkel's diameter spans 195.22 kilometers.

Mons La Hire's satellite craters, La Hire A and La Hire B, neighbor as Annegrit's nearest named southeastern neighbors. The satellites present an alternate side arrangement along southern Dorsum Zirkel.

La Hire A is centered at 28.53 degrees north latitude, minus 23.46 degrees west longitude. Satellite A finds its northernmost and southernmost latitudes at 28.61 degrees north and 28.45 degrees north, respectively. It establishes its easternmost and westernmost longitudes at minus 23.37 degrees west and minus 23.55 degrees west, respectively. La Hire A has a diameter of 4.89 kilometers.

La Hire B is centered at 27.69 degrees north latitude, minus 23.03 degrees west longitude. Satellite B obtains northernmost and southernmost latitudes of 27.76 degrees north and 27.63 degrees north, respectively. Its easternmost and westernmost longitudes occur at minus 22.96 degrees west and minus 23.11 degrees west, respectively. La Hire B has a diameter of 3.84 kilometers.

Annegrit numbers among 95 minor features identified with first-name designations on lunar topophotomaps prepared and published by The Defense Mapping Agency (DMA) for the National Aeronautics and Space Administration (NASA). Annegrit is plotted on NASA Lunar Topophotomap 40A1S1, which was published in November 1974. The map's Names Information lists "Annegrit, Charles, Mavis" as unofficial names used "only for the identification of features on this map."

The International Astronomical Union approved Annegrit as the craterlet's official name in 1976. The Gazetteer of Planetary Nomenclature identifies Annegrit as a "German female name."

Detail of Lunar Aeronautical Chart (LAC) 40 shows Annegrit's (center) Mons La Hire-Dorsum Zirkel neighborhood in southwestern Mare Imbrium: image credit NASA/GSFC/ASU, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature

Acknowledgment

My special thanks to talented artists and photographers/concerned organizations who make their fine images available on the internet.

Dedication

This post is dedicated to the memory of our beloved blue-eyed brother, Charles, who guided the creation of the Met Opera and Astronomy posts on Earth and Space News. We memorialized our brother in "Our Beloved Blue-Eyed Brother, Charles, With Whom We Are Well Pleased," published on Earth and Space News on Thursday, Nov. 18, 2021, an anniversary of our beloved father's death.

Image credits:

Detail of Near Side Shaded Relief and Color-Coded Topography Map shows Annegrit's Mons La Hire-Dorsum Zirkel neighborhood in southwestern Mare Imbrium: USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature, Public Domain, via Wikimedia Commons @ https://commons.wikimedia.org/wiki/File:Near_side_39.jpg

Detail of Lunar Aeronautical Chart (LAC) 40 shows Annegrit's (center) Mons La Hire-Dorsum Zirkel neighborhood in southwestern Mare Imbrium: image credit NASA/GSFC/ASU, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature @ https://planetarynames.wr.usgs.gov/images/Lunar/lac_40_wac.pdf

For further information:

Andersson, Leif E.; and Ewen A. Whitaker. NASA Catalogue of Lunar Nomenclature. NASA Reference Publication 1097. Hampton VA: NASA Scientific and Technical Information Branch, October 1982.
Available via NASA NTRS (NASA Technical Reports Server) @ https://ntrs.nasa.gov/api/citations/19830003761/downloads/19830003761.pdf

Consolmagno, Guy; and Dan M. Davis. Turn Left at Orion. Fourth edition. Cambridge UK; New York NY: Cambridge University Press, 2011.

The Defense Mapping Agency Topographic Center. "Lunar Topophotomap Dorsum Zirkel." National Aeronautics and Space Administration Lunar Topophotomap Edition 1 Sheet 40A1S1 (50). Washington DC: The Defense Mapping Agency Topographic Center, November 1974.
Available @ https://www.lpi.usra.edu/resources/mapcatalog/topophoto/40A1S1/150dpi.jpg

Elger, Thomas Gwyn. “Lahire.” The Moon, A Full Description and Map of Its Principal Physical Features: 158. London UK: George Philip & Son, 1895.
Available via Internet Archive @ https://archive.org/details/moonfulldescript00elgeuoft/page/158/mode/1up

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Annegrit.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/283

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Charles.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1151

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Descriptor Terms (Feature Types).” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Documentation.
Available @ https://planetarynames.wr.usgs.gov/DescriptorTerms

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Dorsum Zirkel.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/1625

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “La Hire A.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/10496

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “La Hire B.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/10497

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mare Imbrium.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3678

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mavis.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3762

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mons La Hire.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3988

International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Target: The Moon.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon.
Available @ https://planetarynames.wr.usgs.gov/Page/MOON/target

Levy, David H. Skywatching. Revised and updated. San Francisco CA: Fog City Press, 1994.

Marriner, Derdriu. "Akis Craterlet Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, Aug. 3, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/08/akis-craterlet-resides-in-southwestern.html

Marriner, Derdriu. "Dorsum Thera Resides in Southwestern Mare Imbrium on Lunar Near Side." Earth and Space News. Wednesday, July 27, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/07/dorsum-thera-resides-in-southwestern.html

Marriner, Derdriu. "Lunar Topophotomap Minor Feature Names Were Approved in 1976 and 1979." Earth and Space News. Wednesday, July 20, 2022.
Available @ https://earth-and-space-news.blogspot.com/2022/07/lunar-topophotomap-minor-feature-names.html

The Moon Wiki. “Annegrit.” The Moon > Lunar Features Alphabetically > A Nomenclature.
Available @ https://the-moon.us/wiki/Annegrit

The Moon Wiki. “Charles.” The Moon > Lunar Features Alphabetically > C Nomenclature.
Available @ https://the-moon.us/wiki/Charles

The Moon Wiki. “Mare Imbrium.” The Moon > Lunar Features Alphabetically > I Nomenclature.
Available @ https://the-moon.us/wiki/Imbrium,_Mare

The Moon Wiki. "Minor Feature." The Moon > Glossary.
Available @ https://the-moon.us/wiki/Minor_Feature

The Moon Wiki. “Mons La Hire.” The Moon > Lunar Features Alphabetically > L Nomenclature.
Available @ hhttps://the-moon.us/wiki/Mons_La_Hire

Moore, Patrick, Sir. Astronomy Encyclopedia: An A-Z Guide to the Universe. New York NY: Oxford University Press, Inc., 2002.

Moore, Patrick, Sir. Philip’s Atlas of the Universe. Revised edition. London UK: Philip’s, 2005.

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