It has 19 satellite craters with diameters ranging between about 3 and 22 km.

The satellite crater Roche B lies across the northeastern inner wall.

The satellite crater Theon Senior A can be found to the north.

The satellite crater Nernst T has broken through the western rim edge.

There is a pair of satellite craters on the mare to the south that are named for this peak (see below).

The satellite crater Hercules G is located prominently just to the south of the center.

Segers is unusual in that all of its satellite craters have a larger diameter.

Lagalla F, an irregular satellite crater, is attached to the western rim.

In a number of cases the satellite crater could lie closer to a main crater other than the one with which it is identified.

This satellite crater is overlain by multiple impacts along its northern and western rim.