| Unknown | ||||
| Name | Format | Size | Date | |
|---|---|---|---|---|
| 4 Moons | Unknown | 554b | 1988-10-07 | |
| Asteroid Belt | Unknown | 554b | 1988-10-07 | |
| Blob | Unknown | 554b | 1988-10-06 | |
| Catch Up | Unknown | 554b | 1988-10-06 | |
| Collisions | Unknown | 554b | 1988-10-06 | |
| Large system | Unknown | 554b | 1988-10-07 | |
| Lost Moon | Unknown | 554b | 1988-10-06 | |
| Lost moon II | Unknown | 554b | 1988-10-07 | |
| Moon | Unknown | 554b | 1988-10-06 | |
| Moon on moon | Unknown | 554b | 1988-10-07 | |
| Retrograde | Unknown | 554b | 1988-10-07 | |
| Simple Orbit | Unknown | 554b | 1988-10-06 | |
| Sling Shot | Unknown | 554b | 1988-10-06 | |
| Solar System | Unknown | 554b | 1988-10-06 | |
| Solar System II | Unknown | 554b | 1988-10-06 | |
| Solar System III | Unknown | 554b | 1988-10-06 | |
| Three guys | Unknown | 554b | 1988-10-06 | |
| Train | Unknown | 554b | 1988-10-07 | |
| Triple | Unknown | 554b | 1988-10-07 | |
| Twin pulsars | Unknown | 554b | 1988-10-07 | |
| Yo-Yo | Unknown | 554b | 1988-10-06 | |