Firsov (crater)

Short description: Lunar impact crater on the far side of the Moon

Firsov

Apollo 16 Mapping Camera image. Firsov below right of center, Firsov V above left of center

Diameter| 51 km
Depth| Unknown
Colongitude| 248° at sunrise

Firsov is a lunar impact crater on the far side of the Moon. It is located to due south of the crater Lobachevskiy, and to the northwest of Abul Wáfa. The circular rim of this crater has a small outward bulge along the southern edge, and smaller bulges along the western side. The inner walls have slumped to form talus piles along the base. The low-albedo interior floor is nearly level and featureless.

Just east of Firsov, within an unnamed, flat-floored crater is an unusual swirl pattern of high albedo, similar to the floor of Mare Marginis and to the Reiner Gamma feature.

## Views

* Oblique view with Firsov at center and high-albedo swirls in middle foreground, from Apollo 11

* Oblique view facing southwest, from Apollo 16

* High-albedo swirls east of Firsov, from Apollo 10

## 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 Firsov.

Firsov  | Latitude  | Longitude  | Diameter

|
|
|

K  | 3.1° N  | 113.0° E  | 58 km
P  | 2.9° N  | 111.1° E  | 15 km
Q  | 2.3° N  | 110.0° E  | 25 km
S  | 3.6° N  | 109.8° E  | 96 km
T  | 4.1° N  | 108.6° E  | 26 km
V  | 5.1° N  | 110.7° E  | 44 km

* Firsov Q crater from Apollo 11

## References

* Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
* Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. http://planetarynames.wr.usgs.gov/.
* Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
* Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 978-0-936389-27-1. https://archive.org/details/isbn_9780936389271.
* McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. http://host.planet4589.org/astro/lunar/.
* Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews 12 (2): 136–186. doi:10.1007/BF00171763. Bibcode: 1971SSRv...12..136M.
* Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. ISBN 978-0-304-35469-6. https://archive.org/details/patrickmooreonmo00patr.
* 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.
* Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3. https://archive.org/details/celestialobjects00webb.
* Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
* Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.

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