Opelt (crater)

Opelt (crater)

Coordinates	16°18′S 17°30′W / 16.3°S 17.5°W / -16.3; -17.5Coordinates: 16°18′S 17°30′W / 16.3°S 17.5°W / -16.3; -17.5
Diameter	48 km
Depth	Unknown
Colongitude	17° at sunrise
Eponym	Friedrich W. Opelt

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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