Manilius (crater)

Manilius
	Lunar Orbiter 4 image
Coordinates	14°30′N 9°06′E / 14.5°N 9.1°E
Diameter	38.34 km (23.82 mi)
Depth	3.05 km (10,000 ft)
Colongitude	351° at sunrise
Formation	Eratosthenian
Eponym	Marcus Manilius

Manilius is a lunar impact crater on the northeast edge of Mare Vaporum. T. W. Webb described it as "a beautiful cavity" that "has a broad luminous terraced crater- and peak-bespeckled ring".^[3] Its diameter is 38 km.^[1]

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 infrared spectrum of pure crystalline plagioclase has been identified along the northern walls.^[4]

The crater 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.^[5]^[2]

Names

Manilius is named after the Roman astronomer Marcus Manilius. Its designation was adopted by the International Astronomical Union in 1935.^[1] 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.^[6]^: 61 Earlier lunar cartographers had given the feature different names. Michael van Langren's 1645 map calls it "Isabellae Reg. Hisp." (Isabella, Queen of Spain),^[6]^: 198 and Johannes Hevelius called it "Insula Besbicus" after the island in Turkey now known as İmralı.^[6]^: 202

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

Oblique view of Manilius G, northeast of Manilius

The following craters have been renamed by the IAU.^[7]

Manilius A — See Bowen.
Manilius F — See Yangel'.

References

1 2 3 "Manilius". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
1 2 Wilhelms, Don E.; McCauley, John F.; Trask, Newell J. (1987). The geologic history of the Moon. USGS Professional Paper 1348. Washington: U.S. Government Printing Office. doi:10.3133/pp1348. Table 12.2.
↑ Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. pp. 118, 154–159. Reprint: ISBN 978-0-486-20917-3
↑ Donaldson Hanna, K. L.; et al. (July 2014). "Global assessment of pure crystalline plagioclase across the Moon and implications for the evolution of the primary crust". Journal of Geophysical Research: Planets. 119 (7): 1516–1545. Bibcode:2014JGRE..119.1516D. doi:10.1002/2013JE004476.
↑ Stratigraphy of Lunar Craters, Don E. Wilhelms and Charles J. Byrne, January 23, 2009
1 2 3 Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
↑ Moore, Patrick; Rees, Robin (2014). Patrick Moore's Data Book of Astronomy (2 ed.). Cambridge University Press. pp. 50–79. ISBN 978-1-139-49522-6.

Sources

Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.
Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.
Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.

External links

Manilius at The Moon Wiki
Wood, Chuck (December 4, 2005). "A Line of Domes". Lunar Photo of the Day. Archived from the original on May 14, 2006. Retrieved 2006-07-21.
Wood, Chuck (September 8, 2007). "Rare Image of a Common Crater". Lunar Photo of the Day. Archived from the original on June 30, 2015. Retrieved 2007-09-10.

[gpn-1] 1 2 3 "Manilius". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.

[Wilhelms_et_al_1987-2] 1 2 Wilhelms, Don E.; McCauley, John F.; Trask, Newell J. (1987). The geologic history of the Moon. USGS Professional Paper 1348. Washington: U.S. Government Printing Office. doi:10.3133/pp1348. Table 12.2.

[Webb_1962-3] Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. pp. 118, 154–159. Reprint: ISBN 978-0-486-20917-3

[Donaldson_Hanna_et_al_2014-4] Donaldson Hanna, K. L.; et al. (July 2014). "Global assessment of pure crystalline plagioclase across the Moon and implications for the evolution of the primary crust". Journal of Geophysical Research: Planets. 119 (7): 1516–1545. Bibcode:2014JGRE..119.1516D. doi:10.1002/2013JE004476.

[5] Stratigraphy of Lunar Craters, Don E. Wilhelms and Charles J. Byrne, January 23, 2009

[Whitaker_1999-6] 1 2 3 Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.

[Moore_Rees_2014-7] Moore, Patrick; Rees, Robin (2014). Patrick Moore's Data Book of Astronomy (2 ed.). Cambridge University Press. pp. 50–79. ISBN 978-1-139-49522-6.

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