Craterra

Southeastern Moon

An Eroded Pre-Nectarian Crater in the Southeastern Moon

Softened rims and an intruding 50-kilometer satellite crater mark this ancient lunar formation.

Feature Profile & Selenographic Data

Feature type
crater
Coordinates
55.49° S · 43.15° E
Diameter
91.65 km
IAU approval
1935/01/01 00:00:00
LAC quadrangle
LAC-128 · Biela
Geological Period
Pre-Nectarian

Geological Chronicle

Located in the southeastern part of the Moon, Rosenberger spans 91.65 kilometers across. The feature dates to the Pre-Nectarian epoch and has been heavily eroded by impacts, softening its outer rim into a low, indistinct rise that forms a shallow circular depression on the surface. The crater lies within a crowded field of prominent formations, with the slightly smaller Vlacq nearly attached along its northwestern outer rim, Biela situated to the east, and Hagecius positioned to the south-southeast.

The interior floor forms a relatively level plain marked by several small craterlets, featuring a low central peak at its midpoint joined to a small craterlet to the north. South-southeast of the center lie the worn remains of another small crater. Along the southern margin, the 50-kilometer satellite crater Rosenberger D intrudes directly into the rim, while additional worn craterlets line the remaining wall.

Chronology & Exploration

  1. Pre-Nectarian Crater Formation

    Rosenberger forms during the Pre-Nectarian epoch on the lunar geologic timescale.

Scientific Sources & References

Name Origin

Otto August; German astronomer, mathematician (1800-1890).

Interactive Lunar Surface

Explore Rosenberger in 3D

Inspect lunar elevation data and the official selenographic position.