Sosigenes (crater)

Sosigenes is a lunar impact crater on the west edge of Mare Tranquillitatis. Its diameter is 17 km. It was named after ancient Greek astronomer Sosigenes of Alexandria. It lies to the east of the large walled plain Julius Caesar. The crater rim has a high albedo, making it relatively bright. It has a small central rise at the midpoint of the floor.

The crater (to the top right) area in a Selenochromatic format Image (Si)

Sosigenes

LRO image
Coordinates	8.7°N 17.6°E / 8.7; 17.6
Diameter	17 km
Depth	1.7 km
Colongitude	342° at sunrise
Eponym	Sosigenes of Alexandria

To the east on the mare is a formation of parallel rilles designated the Rimae Sosigenes. These follow a course to the north, and have a length of about 150 kilometers. The small, bowl-shaped crater Sosignes A lies across one of these rilles.

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 Sosigenes.

Sosigenes crater and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1

Sosigenes A

Irregular mare patch crossing Rima Sosigenes

Rimae Sosigenes, the IMP above, and Sosigenes A crater

Sosigenes	Latitude	Longitude	Diameter
A	7.8° N	18.5° E	12 km
B	8.3° N	17.2° E	4 km
C	7.2° N	18.9° E	3 km

References

• Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
• 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.
• McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.
• 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. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763. S2CID 122125855.
• 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.
• Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.
• 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.

External links

• at The Moon Wiki
• Rimae Sosigenes at The Moon Wiki - on its rille
• LTO-42D4 Sulpicius Gallus — L&PI topographic map
• Is the Moons' Fault - the rille Rimae Sosigenes not mentioned in that article
• Wood, Chuck (September 23, 2004). "Lunar Crater Types". Lunar Photo of the Day. Archived from the original on 2016-03-10. Retrieved 2017-10-06. - one of the craters depicts Sosigenes
• Wood, Chuck (April 26, 2006). "Dead Romans". Lunar Photo of the Day. Archived from the original on June 14, 2011. Retrieved 2006-07-12.