Millikan (crater)
 Clementine mosaic | |
| Coordinates | 46°46′N 121°31′E / 46.76°N 121.52°E |
|---|---|
| Diameter | 93.97 km (58.39 mi) |
| Depth | Unknown |
| Colongitude | 240° at sunrise |
| Eponym | Robert A. Millikan |
Millikan is a lunar impact crater in the northern hemisphere of the Moon's far side.[1] It is located to the north of the crater H. G. Wells, and to the southwest of von Békésy.
This formation dates to the Nectarian epoch of the lunar geologic timescale.[2] The rim edge of Millikan is roughly circular and well-defined, but with some irregularities. There are some small outward bulges along the south and east where the edge has slumped inwards somewhat. The inner walls lacks a terrace structure that is seen, for example, in the smaller Cantor to the south.
The interior floor of Millikan is relatively level, and there is a small, bowl-shaped crater to the north of the midpoint. Offset to the west of the middle is a low central peak. The floor is marked by a number of tiny craterlets.
Prior to formal naming by the IAU in 1970,[3] Millikan was called Crater 47.[4]
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 Millikan.
| Millikan | Latitude | Longitude | Diameter |
|---|---|---|---|
| B | 49.8° N | 123.5° E | 21 km |
| J | 45.8° N | 124.6° E | 36 km |
| Q | 43.9° N | 118.6° E | 33 km |
| R | 46.0° N | 117.7° E | 49 km |
References
- ↑ Moore, Patrick (2000). The Data Book of Astronomy. CRC Press. p. 69. ISBN 978-1-4200-3344-1.
- ↑ Tompkins, Stefanie; Pieters, Carle M. (January 1999). "Mineralogy of the lunar crust: Results from Clementine". Meteoritics & Planetary Science. 34 (1): 25–41. Bibcode:1999M&PS...34...25T. doi:10.1111/j.1945-5100.1999.tb01729.x.
- ↑ Millikan, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)
- ↑ Lunar Farside Chart (LFC-1A), 2nd Edition October 1967
Sources
- 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.
- 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. Archived from the original on 2012-02-08. 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.
{{cite book}}: ISBN / Date incompatibility (help) - 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.