Olbers (crater)

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Crater characteristics
Coordinates	7.4° N, 75.9° W
Diameter	74 km
Depth	3.0 km
Colongitude	76° at sunrise
Eponym	Heinrich W. M. Olbers

Olbers is a lunar crater that lies at the west edge of the Oceanus Procellarum, near the western limb of the Moon. It lies to the northwest of Hevelius crater, and to the north of the indistinct Hedin crater formation. Further to the south is the Riccioli crater. Due to its location, this crater appears very oblong because of foreshortening. It is viewed nearly from the edge, making observation of the interior difficult from the Earth.

The rim of Olbers is somewhat worn, with notches to the north, east, and south. The interior floor is relatively flat, especially toward the eastern rim, and is not marked by notable craterlets. The floor is covered by ray material and ejecta from the adjacent Glushko crater.

[edit] Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Olbers crater.

Olbers	Latitude	Longitude	Diameter
B	6.8° N	74.1° W	16 km
D	10.2° N	78.2° W	116 km
G	8.4° N	74.5° W	10 km
H	8.7° N	74.4° W	8 km
K	6.8° N	78.2° W	24 km
M	8.0° N	81.2° W	33 km
N	9.0° N	79.7° W	22 km
S	6.8° N	76.7° W	21 km
V	9.1° N	73.0° W	7 km
W	5.9° N	81.5° W	18 km
Y	6.5° N	83.6° W	21 km

The following craters have been renamed by the IAU:

• Olbers A — See Glushko crater.

[edit] 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. Retrieved on 2007-08-05.
• Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 0-521-81528-2. 
• Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 0-936389-27-3. 
• McDowell, Jonathan (July 15, 2007). Lunar Nomenclature. Jonathan's Space Report. Retrieved on 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: 136. 
• Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. ISBN 0-304-35469-4. 
• Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 0521335000. 
• Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 0-913135-17-8. 
• Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes, 6th revision, Dover. ISBN 0-486-20917-2. 
• Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 0-521-62248-4. 
• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 1852331933.