Barnard (lunar crater)
Lunar impact crater
From Wikipedia, the free encyclopedia
Barnard is a lunar impact crater that is located near the eastern limb of the Moon. It is attached to the southeast rim of the large crater Humboldt,[2] and Abel lies directly to the south.[3] To the northeast is the crater Curie, while to the southeast is the Mare Australe.
View from Apollo 15 | |
| Coordinates | 29.5°S 85.6°E |
|---|---|
| Diameter | 115.73 km (71.91 mi)[1] |
| Depth | Unknown |
| Colongitude | 276° at sunrise |
| Eponym | Edward E. Barnard |
The formation has been reshaped and distorted by nearby impacts. The interior is irregular, with an intrusion into the southwest rim and rugged formations particularly in the southern half. A matched pair of small craterlets lies near the center of the interior floor. The satellite craters Barnard A and B are attached to the southwest crater rim exterior.[4]: 99
This crater is named after American astronomer Edward E. Barnard (1857–1923), the discoverer of Barnard's Star in 1916.[5] The name was introduced into lunar nomenclature by David W. G. Arthur and Ewen Whitaker with the Rectified Lunar Atlas (1963).[6][7] Its designation was formally adopted by the International Astronomical Union in 1964.[1]
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 Barnard.[8]
| Barnard[4]: 292 | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 31.8° S | 84.5° E | 13 km |
| D | 31.4° S | 89.3° E | 47 km |
Barbard D has been flooded by Mare Australe.[9]
