Poincaré (crater)
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| Crater characteristics | |
|---|---|
| Coordinates | 56.7° S, 163.6° E |
| Diameter | 319 km |
| Depth | Unknown |
| Colongitude | 207° at sunrise |
| Eponym | Henri Poincaré |
Poincaré is a large lunar impact basin that lies in the southern hemisphere on the far side of the Moon. Most of the formation has been heavily eroded by subsequent impacts, leaving a battered formation with only rugged remnants of the original outer rim to the west.
The eastern half has been completely worn away, and much of the interior has been resurfaced by lava flows. This surface has a lower albedo than the surrounding terrain, giving it a dark appearance. A rugged formation forms a low north-south range across the eastern section of the floor, possibly the remnant of an inner ring.
The perimeter of the Poincaré formation has several notable craters. To the north is the Hopmann crater, and the Abbe and Hess craters lie to the east. Directly to the west is the Planck crater, a walled-plain of similar dimensions to Poincaré. Both formations are sufficiently large to have formed a small lunar mare on the near side face of the Moon.
[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 Poincaré crater.
| Poincaré | Latitude | Longitude | Diameter |
|---|---|---|---|
| C | 54.4° S | 169.0° E | 20 km |
| J | 59.4° S | 168.7° E | 20 km |
| Q | 59.3° S | 160.9° E | 26 km |
| R | 60.2° S | 155.0° E | 52 km |
| X | 53.8° S | 161.9° E | 19 km |
| Z | 53.7° S | 164.9° E | 35 km |
[edit] References
- Wood, Chuck (November 21, 2006). A Basin to Study. Lunar Photo of the Day. Retrieved on 2006-11-28.
- See the reference table for the general listing of literature and web sites that were used in the compilation of this page.
