Picard (crater)
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Template:Infobox Lunar crater Picard is a lunar impact crater that lies in Mare Crisium. The crater is named for 17th century French astronomer and geodesist Jean Picard.<ref>Template:GPN</ref> It is the biggest non-flooded crater of this mare, being slightly larger than Peirce to the north-northwest. To the west is the almost completely flooded crater Yerkes. To east of Picard is the tiny Curtis.
Picard is a crater from the Eratosthenian period, which lasted from 3.2 to 1.1 billion years ago.<ref>The geologic history of the Moon. USGS Professional Paper 1348. By Don E. Wilhelms, John F. McCauley, and Newell J. Trask. U.S. Government Printing Office, Washington: 1987. Table 12.2.</ref> Inside Picard is a series of terraces that seismologists have attributed to a collapse of the crater floor. It has a cluster of low hills at the bottom.<ref>Moore, Patrick (2001). On the Moon. Sterling Publishing Co.. Template:ISBN.</ref>
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 Picard.<ref>Template:Cite book</ref>
| Picard | Coordinates | Diameter, km |
|---|---|---|
| K | Template:Coord | 9 |
| L | Template:Coord | 7 |
| M | Template:Coord | 8 |
| N | Template:Coord | 19 |
| P | Template:Coord | 8 |
| Y | Template:Coord | 4 |
The following craters have been renamed by the IAU.
- Picard G — see Tebbutt.
- Picard H — see Shapley.
- Picard X — see Fahrenheit.
- Picard Z — see Curtis.
References
External links
- Map of the region
- Part of Picard crater: photo by Lunar Reconnaissance Orbiter with resolution 1,3 meters/pixel
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- Picard in The-Moon Wiki