This is a heavily eroded crater with a jumbled outer rim and uneven interior. The pair of slightly smaller satellite craters 'Stark Y' and 'Stark V' are attached to the northwest and western exterior respectively, creating a triple-crater formation. (The designations Homer for 'Stark Y' and Sappho for 'Stark V' were suggested for these features, but the IAU rejected these names.) Within the interior of Stark is a small crater located just to the south of the mid-point.
| Stark | Latitude | Longitude | Diameter |
|---|---|---|---|
| R | 26.3° S | 133.2° E | 21 km |
| V | 25.1° S | 133.3° E | 25 km |
| Y | 24.4° S | 134.0° E | 31 km |