Segner (crater)
Segner is a lunar impact crater located near the southwestern limb of the Moon, to the northeast of the giant walled plain Bailly. The crater Zucchius is a few kilometers to the south-southwest of the rim, and to the north east lies the unusual formation Schiller. The smaller crater Weigel is located to the east.
Segner has a low, worn rim, and is generally much less prominent than the nearby Zucchius. The floor is distinguished only by a pair of small craterlets and a slightly undulating surface. There is no indication of a central peak. A low ridge runs to the north from the edge of the northern rim.
Segner lies within the southwest portion of the Schiller-Zucchius Basin.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 Segner.
| Segner | Latitude | Longitude | Diameter |
| A | 57.2° S | 47.0° W | 9 km |
| B | 57.8° S | 56.0° W | 35 km |
| C | 57.7° S | 45.9° W | 19 km |
| E | 57.6° S | 56.9° W | 13 km |
| G | 56.4° S | 55.3° W | 12 km |
| H | 58.4° S | 48.0° W | 7 km |
| K | 56.1° S | 54.1° W | 10 km |
| L | 58.7° S | 47.0° W | 5 km |
| M | 59.8° S | 45.3° W | 5 km |
| N | 59.2° S | 44.2° W | 5 km |
