Gregory (lunar crater)
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 Apollo 16 Mapping Camera image | |
| Coordinates | 2°12′N 127°12′E / 2.2°N 127.2°E |
|---|---|
| Diameter | 64 km |
| Colongitude | 234° at sunrise |
| Eponym | James Gregory |
Gregory is a lunar impact crater on the far side of the Moon. It is located to the southeast of the crater Ibn Firnas, and north-northeast of Bečvář. About one crater diameter to the north is the smaller Morozov.
This is a worn and eroded crater formation. The northern rim is degraded due to impacts. Attached to the exterior of the southwest is Gregory Q, a satellite crater about the same size as Gregory. Within the interior is the remains of a small crater rim along the northwestern inner wall. To the east of Gregory and leading away to the southeast is a crater chain designated Catena Gregory.[1]
The crater was named after 17th century Scottish astronomer and mathematician James Gregory by the IAU in 1970.[2] While Gregory itself was unnumbered, its satellite crater Gregory Q was known as Crater 282 prior to naming in 2006.[3][4]
