Lamont (lunar crater) explained

Coordinates:	5°N 23.2°W
Diameter:	75 km
Depth:	Unknown
Colong:	337
Eponym:	Johann von Lamont

Lamont is a system of low ridges in the surface of Mare Tranquillitatis that is most likely a submerged impact crater. It was named after Scottish-born German astronomer Johann von Lamont. It is located to the southeast of the crater Arago.

Lamont has the shape of two roughly concentric but incomplete rings with an inner diameter of 60 km and an outer diameter of 120 km. (The official diameter is 75 km.) Radial ridges radiate away from the center of Lamont, except in the east and west quadrants. The ridge system is only a few hundred meters in height, with a width that averages 5 km but is thicker to the southeast. This feature is only readily visible at low angles of illumination, when shadows highlight the terrain features.

This feature is associated with a mass concentration (mascon), a sub-surface region of higher-density material.^[1]

References

• Dvorak, J. . Phillips, R. J. . Gravity anomaly and structure associated with the Lamont region of the moon . Proceedings of the 10th Lunar and Planetary Science Conference . 2265–2275 . Pergamon Press, Inc. . July 28 – August 1, 1975 . Houston, Texas . 1979LPSC...10.2265D .
• Book: Andersson . L. E. . Whitaker . E. A. . Ewen Whitaker . 1982 . NASA Catalogue of Lunar Nomenclature . NASA RP-1097 .
• Book: Bussey . B. . Ben Bussey . Spudis . P. . Paul Spudis . 2004 . The Clementine Atlas of the Moon . . New York . 978-0-521-81528-4 .
• Book: Cocks . Elijah E. . Cocks . Josiah C. . 1995 . Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature . Tudor Publishers . 978-0-936389-27-1 .
• Web site: McDowell . Jonathan . July 15, 2007 . Lunar Nomenclature . . 2007-10-24 .
• Menzel. D. H.. Minnaert. M.. Levin. B.. Dollfus. A.. Bell. B.. Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU. 10.1007/BF00171763. Space Science Reviews. 12. 2. 136–186. 1971. 1971SSRv...12..136M. 122125855.
• Book: Moore , Patrick . Patrick Moore . 2001 . On the Moon . . 978-0-304-35469-6 .
• Book: Price , Fred W. . 1988 . The Moon Observer's Handbook . Cambridge University Press . 978-0-521-33500-3 .
• Book: Rükl , Antonín . Antonín Rükl . 1990 . Atlas of the Moon . . 978-0-913135-17-4 .
• Book: Webb , Rev. T. W. . Thomas William Webb . 1962 . Celestial Objects for Common Telescopes . 6th revised . Dover . 978-0-486-20917-3 .
• Book: Whitaker , Ewen A. . Ewen Whitaker . 1999 . Mapping and Naming the Moon . Cambridge University Press . 978-0-521-62248-6 .
• Book: Wlasuk , Peter T. . 2000 . Observing the Moon . Springer . 978-1-85233-193-1 .

External links

• Web site: Wood . Chuck . December 2, 2007 . A Lost Gem . Lunar Photo of the Day . 2007-12-03 . dead . https://web.archive.org/web/20071204152325/http://www.lpod.org/?m=20071202 . December 4, 2007.

Notes and References

1. Neumann. Gregory A.. Zuber. Maria T.. Wieczorek. Mark A.. Head. James W.. Baker. David M. H.. Solomon. Sean C.. Smith. David E.. Lemoine. Frank G.. Mazarico. Erwan. Sabaka. Terence J.. Goossens. Sander J.. 9. 2015. Lunar impact basins revealed by Gravity Recovery and Interior Laboratory measurements. Science Advances. en. 1. 9. e1500852. 10.1126/sciadv.1500852. 2375-2548. 4646831. 26601317. 2015SciA....1E0852N.