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Halley (lunar crater)
Encyclopedia
Halley is a lunar
impact crater
that is intruding into the southern wall of the walled plain Hipparchus
. To the southwest of Halley is the large crater Albategnius
, and due east lies the slightly smaller Hind
.
The rim of Halley is somewhat worn, and a scar in the lunar surface passes through the western rim, forming a valley that runs to the south-southeast, near the rim of Albategnius. The interior floor of Halley is relatively flat.
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
impact crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...
that is intruding into the southern wall of the walled plain Hipparchus
Hipparchus (lunar crater)
Hipparchus is the degraded remnant of a lunar crater. It is located to the southeast of Sinus Medii, near the center of the visible Moon. To the south is the prominent crater Albategnius, and to the southwest lies Ptolemaeus, a feature of comparable dimensions to Hipparchus. Horrocks lies entirely...
. To the southwest of Halley is the large crater Albategnius
Albategnius (crater)
Albategnius is an ancient lunar impact crater located in the central highlands. It is named after the Muslim astronomer and scientist Al-Battani. The level interior forms a "walled plain", surrounded by the high, terraced rim. The outer wall is somewhat hexagon-shaped, and has been heavily eroded...
, and due east lies the slightly smaller Hind
Hind (crater)
Hind is a lunar impact crater that lies to the southeast of the walled plain Hipparchus, and due east of the crater Halley. The rim of Hind is relatively free of wear and distortion, except for a break at the north rim. The floor of Hind is relatively uneven, however, compared to the interior of...
.
The rim of Halley is somewhat worn, and a scar in the lunar surface passes through the western rim, forming a valley that runs to the south-southeast, near the rim of Albategnius. The interior floor of Halley is relatively flat.
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 Halley.| Halley | Latitude | Longitude | Diameter |
|---|---|---|---|
| B | 8.5° S | 4.5° E | 6 km |
| C | 8.9° S | 6.6° E | 5 km |
| G | 9.1° S | 5.6° E | 5 km |
| K | 8.6° S | 5.9° E | 5 km |