Olbers (crater)

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

Olbers

Lunar Orbiter 4 image
Coordinates	7°24′N 75°54′W / 7.4°N 75.9°W / 7.4; -75.9
Diameter	74 km
Depth	3.0 km
Colongitude	76° at sunrise
Eponym	Heinrich W. M. Olbers

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.

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 Olbers.

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).

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 2007-08-05.
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• 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.
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• 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.