Goodacre (crater)
Encyclopedia
Goodacre is a lunar
impact crater
. It is located in the rugged southern highlands on the Moon
's near side, and is attached to the north-northeastern part of the exterior of Gemma Frisius
, a heavily worn and much larger formation. About two crater diameters to the north of Goodacre lies Pontanus
.
The outer rim of this crater formation has become eroded by smaller impacts, and is heavily damaged along the southern side. The somewhat distorted satellite crater Goodacre G lies across the co-joined rims of Goodacre and Gemma Frisius. The interior floor has a small central rise and there is a small crater near the northern inner wall. A trace of ray material
from Tycho
lies along the southwest rim and forms a wispy line that crosses the central peak.
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...
. It is located in the rugged southern highlands on the Moon
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...
's near side, and is attached to the north-northeastern part of the exterior of Gemma Frisius
Gemma Frisius (crater)
Gemma Frisius is a lunar crater that is located in the rugged southern highlands of the Moon. It lies to the north of the walled plain Maurolycus, and southeast of the smaller crater Poisson. The crater Goodacre is attached to the northeast rim....
, a heavily worn and much larger formation. About two crater diameters to the north of Goodacre lies Pontanus
Pontanus (crater)
Pontanus is a lunar crater that is located in the southern highlands of the Moon's near side. It lies approximately mid-way between the craters Sacrobosco to the north-northeast and Gemma Frisius to the south-southwest...
.
The outer rim of this crater formation has become eroded by smaller impacts, and is heavily damaged along the southern side. The somewhat distorted satellite crater Goodacre G lies across the co-joined rims of Goodacre and Gemma Frisius. The interior floor has a small central rise and there is a small crater near the northern inner wall. A trace of ray material
Ray system
A ray system comprises radial streaks of fine ejecta thrown out during the formation of an impact crater, looking a bit like many thin spokes coming from the hub of a wheel. The rays can extend for lengths up to several times the diameter of their originating crater, and are often accompanied by...
from Tycho
Tycho (crater)
Tycho is a prominent lunar impact crater located in the southern lunar highlands, named after the Danish astronomer Tycho Brahe . To the south is the crater Street; to the east is Pictet, and to the north-northeast is Sasserides. The surface around Tycho is replete with craters of various sizes,...
lies along the southwest rim and forms a wispy line that crosses the central peak.
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 Goodacre.| Goodacre | Latitude | Longitude | Diameter |
|---|---|---|---|
| B | 31.8° S | 13.7° E | 9 km |
| C | 32.3° S | 14.2° E | 5 km |
| D | 33.4° S | 15.0° E | 8 km |
| E | 32.9° S | 15.5° E | 6 km |
| F | 31.9° S | 14.6° E | 5 km |
| G | 33.3° S | 13.9° E | 16 km |
| H | 32.8° S | 16.1° E | 4 km |
| K | 30.9° S | 13.5° E | 11 km |
| P | 34.0° S | 16.7° E | 22 km |