Opelt (crater)
Opelt is the lava-flooded remnant of a lunar crater on the Mare Nubium. It lies to the north of a similar formation named Gould, and to the northeast of the prominent Bullialdus.
Only a slightly raised outline remains of Opelt's rim, the interior having been inundated with lava. The rim has a wide break at the northern end and several smaller breaks to the south and southeast. The satellite craterlet Opelt E lies at the southern end of the surviving western rim. The interior floor is nearly level, with the exception of a slight rise to the southwest.
To the north of Opelt on the lunar mare is a sinuous system of rilles designated Rimae Opelt. These occupy a diameter of about 70 kilometers.
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 Opelt.
| Opelt |
Latitude |
Longitude |
Diameter |
| E |
17.0° S |
17.8° W |
8 km |
| F |
18.1° S |
18.7° W |
4 km |
| G |
16.8° S |
17.2° W |
4 km |
| H |
15.8° S |
17.3° W |
3 km |
| K |
13.6° S |
17.1° W |
5 km |
References
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