Reiner (crater)
Reiner is a lunar impact crater on the Oceanus Procellarum, in the western part of the Moon. It has a nearly circular rim, but appears oval in shape due to foreshortening. The rim edge is well-defined and has not been eroded by impacts. In the midpoint of the irregular crater floor is a central peak. Outside the rim is a hummocky that extends out across the mare for about half a crater diameter.
To the west-northwest of the crater on the Oceanus Procellarum is the unusual feature Reiner Gamma, a fish-shaped surface marking of ray-like material with a high albedo.Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Reiner.
| Reiner | Latitude | Longitude | Diameter |
| A | 5.2° N | 51.4° W | 10 km |
| C | 3.5° N | 51.5° W | 7 km |
| E | 1.9° N | 49.6° W | 4 km |
| G | 3.3° N | 54.3° W | 3 km |
| H | 9.1° N | 54.7° W | 8 km |
| K | 8.1° N | 53.9° W | 3 km |
| L | 8.0° N | 54.6° W | 6 km |
| M | 8.6° N | 56.1° W | 3 km |
| N | 5.4° N | 57.5° W | 4 km |
| Q | 1.4° N | 50.9° W | 3 km |
| R | 3.7° N | 55.5° W | 45 km |
| S | 2.2° N | 50.7° W | 4 km |
| T | 3.7° N | 52.2° W | 2 km |
| U | 4.1° N | 52.5° W | 3 km |
