Manilius (crater) explained

Coordinates:	14.5°N 9.1°W
Diameter:	38km (24miles)
Depth:	3.05km (01.9miles)
Colong:	351
Eponym:	Marcus Manilius

Manilius is a lunar impact crater on the northeast edge of Mare Vaporum. Its diameter is 38 km.

Description

Manilius has a well-defined rim with a sloping inner surface that runs directly down to the ring-shaped mound of scree along the base, and a small outer rampart. The small crater interior has a higher albedo than the surroundings, and it appears bright when the sun is overhead. Within the crater is a central peak formation near the midpoint.

The crater also possesses a ray system that extends for a distance of over 300 kilometers. Despite the presence of these rays, which generally indicate the age of the crater as Copernican, the crater is currently mapped as Eratosthenian age.^{[1] [2]}

Names

Manilius is named after the Roman astronomer Marcus Manilius. Like many of the craters on the Moon's near side, it was given its name by Giovanni Riccioli, whose 1651 nomenclature system has become standardized.^[3] Earlier lunar cartographers had given the feature different names. Michael van Langren's 1645 map calls it "Isabellae Reg. Hisp." (Isabella, Queen of Spain),^[4] and Johannes Hevelius called it "Insula Besbicus" after the island in Turkey now known as İmralı.^[5]

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Manilius.

Manilius	Latitude	Longitude	Diameter
B	16.6° N	7.3° E	6 km
C	12.1° N	10.4° E	7 km
D	13.2° N	7.0° E	5 km
E	18.3° N	6.4° E	49 km
G	15.5° N	9.7° E	5 km
H	17.8° N	8.6° E	3 km
K	11.9° N	11.2° E	3 km
T	13.4° N	10.6° E	4 km
U	13.8° N	10.8° E	4 km
W	13.4° N	12.9° E	4 km
X	14.4° N	13.4° E	3 km
Z	16.4° N	11.7° E	3 km

The following craters have been renamed by the IAU.

• Manilius A - See Bowen.
• Manilius F - See Yangel'.

References

• 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

. 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

. Antonín Rükl . 1990 . Atlas of the Moon . . 978-0-913135-17-4 .

• Book: Webb , Rev. T. W. . Thomas William Webb

. Thomas William Webb . 1962 . Celestial Objects for Common Telescopes . 6th revised . Dover . 978-0-486-20917-3 .

• Book: Whitaker , Ewen A. . Ewen Whitaker

. 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

• Manilius at The Moon Wiki
• Web site: Wood . Chuck . December 4, 2005 . A Line of Domes . Lunar Photo of the Day . 2006-07-21 . dead . https://web.archive.org/web/20060514140427/http://www.lpod.org/?m=20060412 . May 14, 2006 .
• Web site: Wood . Chuck . September 8, 2007 . Rare Image of a Common Crater . Lunar Photo of the Day . 2007-09-10 . dead. https://web.archive.org/web/20150630015846/http://www.lpod.org/?m=20070908. June 30, 2015.

Notes and References

1. http://www.imageagain.com/Strata/StratigraphyCraters.2.0.htm Stratigraphy of Lunar Craters
2. https://pubs.er.usgs.gov/publication/pp1348 The geologic history of the Moon
3. Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p.61.
4. Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p. 198.
5. Ewen A. Whitaker, Mapping and Naming the Moon (Cambridge University Press, 1999), p. 202.