Summary: Webb Crater parents 17 satellites in the eastern lunar near side, with five sharing the northeastern Mare Fecunditatis with their parent.
 |
| Detail of Lunar Astronautical Chart (LAC) 62 shows nine satellites (C, E, F, G, L, P, U, W, X) in the Webb Crater system in Mare Fecunditatis, Sinus Successus and Mare Spumans in the lunar near side’s southeastern quadrant; courtesy NASA (National Aeronautics and Space Administration) / GSFC (Goddard Space Flight Center) / ASU (Arizona State University): U.S. Geological Survey, Public Domain, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature |
Webb Crater parents 17 satellites in the eastern lunar near side, with five in northeastern Mare Fecunditatis with their parent; three in neighboring Sinus Successus; two in Mare Spumans; three between Mare Spumans and Sinus Successus; and four between Mare Spumans and Mare Fecunditatis.
Primary lunar impact crater Webb is centered at minus 0.98 degrees south latitude, 60 degrees east longitude, according to the International Astronomical Union’s (IAU) Gazetteer of Planetary Nomenclature. The southeastern quadrant crater records northernmost and southernmost latitudes at minus 0.63 degrees south and minus 1.33 degrees south, respectively. Webb
registers easternmost and westernmost longitudes at 60.35 degrees east and 59.65 degrees east, respectively. The small crater has a diameter of 21.41 kilometers.
Five of Webb Crater’s 17 satellites occupy the equator-straddling, northeastern Mare Fecunditatis (Sea of Fecundity) with their parent. Webb U lies to the northwest of its parent as an occupant of the near side’s northern hemisphere. U is centered at 1.85 degrees north latitude, 56.23 degrees east longitude and has a diameter of 5.73 kilometers.
Satellites B, D, H and Q share the lunar southern hemisphere’s portion of Mare Fecunditatis with their parent. Lying to the west of its parent, Webb B is centered at minus 0.85 degrees south latitude, 58.37 degrees east longitude and has a diameter of 6.45 kilometers. Lying southwest of its parent, Webb D is centered at minus 2.38 degrees south latitude, 57.52 degrees east longitude and has a diameter of 6.53 kilometers. Lying more closely to its parent’s southwest, Webb H is centered at minus 2.15 degrees south latitude, 59.44 degrees east longitude and has a diameter of 9.98 kilometers. To its parent’s east, Webb Q is centered at minus 1.13 degrees south latitude, 61.24 degrees east longitude and has a diameter of 4.28 kilometers.
Equator-straddling Sinus Successus (Bay of Success) bulges along northeastern Mare Fecunditatis. The lunar bay hosts Webb Crater satellites P, W and X. With center coordinates at 2.39 degrees north latitude, 57.69 degrees east longitude, Webb P is sited in Sinus Successus and has a diameter of 37.86 kilometers.
Satellites W and X cluster along the bay’s northern edge. W is centered at 3.02 degrees north latitude, 58.12 degrees east longitude and has a diameter of 7.75 kilometers. X is centered at 3.22 degrees north latitude, 58.25 degrees east longitude and has a diameter of 7.98 kilometers.
Equator-straddling Mare Spumans (Foaming Sea) lies to the east of Mare Fecunditatis and Sinus Successus. The basaltic plain hosts Webb satellites C and L. With center coordinates of 0.15 degrees north latitude, 63.83 degrees east longitude, Webb C primarily is located in northwestern Mare Spumans and has a diameter of 34.34 kilometers. Resting along the northwestern edge of Mare Spumans, Webb L is centered at 0.16 degrees north latitude, 62.73 degrees east longitude and has a diameter of 6.3 kilometers.
Webb E, F and G are found as northern hemisphere satellites in the terrain between Mare Spumans and Sinus Successus. As the most northerly of the trio, Webb G is centered at 1.67 degrees north latitude, 61.22 degrees east longitude and has a diameter of 9.07 kilometers. Satellite F’s northeastern border snuggles against Webb G’s southwestern reaches. F is centered at 1.47 degrees north latitude, 61 degrees east longitude and has a diameter of 9.54 kilometers. Soloing to the south-southeast of F, Webb E is centered at 0.94 degrees north latitude, 61.05 degrees east longitude and has a diameter of 6.82 kilometers.
Webb J, K, M and N are found as southern hemisphere satellites in the terrain to the south of Sinus Successus, between Mare Spumans and Mare Fecunditatis. As the most northerly of the quartet, Webb M is centered at minus 0.26 degrees south latitude, 63.81 degrees east longitude and has a diameter of 5.83 kilometers. Cozying its northeastern arc with M’s southwestern border, Webb N is centered at minus 0.32 degrees south latitude, 63.62 degrees east longitude and has a diameter of 5.86 kilometers. With M and N resting against its northwestern border, Webb J is centered at minus 0.62 degrees south latitude, 63.99 degrees east longitude and has a diameter of 26.53 kilometers. Soloing to the west of J, Webb K is centered at minus 0.85 degrees south latitude, 62.96 degrees east longitude and has a diameter of 18.61 kilometers.
Three of Webb’s satellites are larger than their parent. With a diameter of 21.41 kilometers, the parent is smaller than P at 37.86 kilometers, C at 34.34 kilometers and J at 26.53 kilometers.
Adjoining satellites M and N rate as the Webb Crater system’s two smallest satellites. Slightly larger N has a diameter of 5.86 kilometers to M’s 5.83-kilometer diameter.
The Webb Crater system honors 19th-century British astronomer and Anglican clergyman Thomas William Webb (Dec. 14, 1807-May 19, 1885). The International Astronomical Union (IAU) approved the parent crater’s name in 1935 during the organization’s Vth (5th) General Assembly, held in Paris, France, from Wednesday, July 10, to Wednesday, July 17. Approval of the system’s 17 satellite designations took place in 2006.
The takeaways for Webb Crater’s parentage of 17 satellites in the eastern lunar near side are the Webb Crater system stretches from northeastern Mare Fecunditatis eastward, through Sinus Successus, to Mare Spumans; and that three satellites (C, J, P) are larger than their parent.
 |
| Detail of Lunar Astronautical Chart (LAC) 80 shows the primary crater and eight satellites (B, D, H, J, K, M, N, Q) in the Webb Crater system in Mare Fecunditatis and Mare Spumans in the lunar near side’s southeastern quadrant; courtesy NASA (National Aeronautics and Space Administration) / GSFC (Goddard Space Flight Center) / ASU (Arizona State University): U.S. Geological Survey, Public Domain, 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.
Image credits:
Image credits:
Detail of Lunar Astronautical Chart (LAC) 62 shows nine satellites (C, E, F, G, L, P, U, W, X) in the Webb Crater system in Mare Fecunditatis, Sinus Successus and Mare Spumans in the lunar near side’s southeastern quadrant; courtesy NASA (National Aeronautics and Space Administration) / GSFC (Goddard Space Flight Center) / ASU (Arizona State University): U.S. Geological Survey, Public Domain, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature @ https://planetarynames.wr.usgs.gov/images/Lunar/lac_62_wac.pdf
Detail of Lunar Astronautical Chart (LAC) 80 shows the primary crater and eight satellites (B, D, H, J, K, M, N, Q) in the Webb Crater system in Mare Fecunditatis and Mare Spumans in the lunar near side’s southeastern quadrant; courtesy NASA (National Aeronautics and Space Administration) / GSFC (Goddard Space Flight Center) / ASU (Arizona State University): U.S. Geological Survey, Public Domain, via USGS Astrogeology Science Center / Gazetteer of Planetary Nomenclature @ https://planetarynames.wr.usgs.gov/images/Lunar/lac_80_wac.pdf
For further information:
For further information:
Consolmagno, Guy; and Dan M. Davis. Turn Left at Orion. Fourth edition. Cambridge UK; New York NY: Cambridge University Press, 2011.
Grego, Peter. The Moon and How to Observe It. Astronomers’ Observing Guides. London UK: Springer-VErlag, 2005.
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Mare Fecunditatis.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 25, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/3673
Available @ https://planetarynames.wr.usgs.gov/Feature/3673
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Sinus Successus.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/5571
Available @ https://planetarynames.wr.usgs.gov/Feature/5571
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
Available @ https://planetarynames.wr.usgs.gov/Page/MOON/target
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/6504
Available @ https://planetarynames.wr.usgs.gov/Feature/6504
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb B.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13825
Available @ https://planetarynames.wr.usgs.gov/Feature/13825
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb C.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13826
Available @ https://planetarynames.wr.usgs.gov/Feature/13826
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb D.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13827
Available @ https://planetarynames.wr.usgs.gov/Feature/13827
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb E.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13828
Available @ https://planetarynames.wr.usgs.gov/Feature/13828
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb F.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13829
Available @ https://planetarynames.wr.usgs.gov/Feature/13829
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb G.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13830
Available @ https://planetarynames.wr.usgs.gov/Feature/13830
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb H.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13831
Available @ https://planetarynames.wr.usgs.gov/Feature/13831
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb J.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13832
Available @ https://planetarynames.wr.usgs.gov/Feature/13832
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb K.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13833
Available @ https://planetarynames.wr.usgs.gov/Feature/13833
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb L.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13834
Available @ https://planetarynames.wr.usgs.gov/Feature/13834
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb M.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13835
Available @ https://planetarynames.wr.usgs.gov/Feature/13835
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb N.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13836
Available @ https://planetarynames.wr.usgs.gov/Feature/13836
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb P.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13837
Available @ https://planetarynames.wr.usgs.gov/Feature/13837
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb Q.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13838
Available @ https://planetarynames.wr.usgs.gov/Feature/13838
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb U.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13839
Available @ https://planetarynames.wr.usgs.gov/Feature/13839
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb W.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13840
Available @ https://planetarynames.wr.usgs.gov/Feature/13840
International Astronomical Union (IAU) / U.S. Geological Survey (USGS) Gazetteer of Planetary Nomenclature. “Webb X.” USGS Astrogeology Science Center > Gazetteer of Planetary Nomenclature > Nomenclature > The Moon. Last updated Oct. 18, 2010.
Available @ https://planetarynames.wr.usgs.gov/Feature/13841
Available @ https://planetarynames.wr.usgs.gov/Feature/13841
Levy, David H. Skywatching. Revised and updated. San Francisco CA: Fog City Press, 1994.
Marriner, Derdriu. "Condon Crater Honors 20th-Century American Physicist Edward Condon." Earth and Space News. Wednesday, Feb. 29, 2012.
Available @ https://earth-and-space-news.blogspot.com/2012/02/condon-crater-honors-20th-century.html
Available @ https://earth-and-space-news.blogspot.com/2012/02/condon-crater-honors-20th-century.html
Marriner, Derdriu. “Webb Crater Honors 19th-Century British Astronomer Thomas William Webb.” Earth and Space News. Wednesday, Dec. 5, 2012.
Available @ https://earth-and-space-news.blogspot.com/2012/12/webb-crater-honors-19th-century-british.html
Available @ https://earth-and-space-news.blogspot.com/2012/12/webb-crater-honors-19th-century-british.html
Moore, Patrick, Sir. Philip’s Atlas of the Universe. Revised edition. London UK: Philip’s, 2005.
Stratton, F.J.M. (Frederick John Marrian), ed. Vth General Assembly Transactions of the IAU Vol. V B Proceedings of the 5th General Assembly Paris France, July 10-17, 1935. Cambridge UK: Cambridge University Press, Jan. 1, 1936.
Available @ https://www.iau.org/publications/iau/transactions_b/
Available @ https://www.iau.org/publications/iau/transactions_b/
van der Hucht, Karel A., ed. XXVIth General Assembly Transactions of the IAU Vol. XVII B Proceedings of the 26th General Assembly Prague, Czech Republic, August 14-25, 2006. Cambridge UK: Cambridge University Press, Dec. 30, 2008.
Available @ https://www.iau.org/publications/iau/transactions_b/
Available @ https://www.iau.org/publications/iau/transactions_b/
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.