| Primary satellite | Secondary satellite |
| Name | STARS | COSMOS 2251 DEB |
| Spacetrack catalog number | 33498 | 34295 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2023 Jun 02 16:40 | 2023 Jun 02 09:49 |
| Time of closest approach (UTC) | 2023 Apr 06 10:45:05.479 |
| Minimum distance | 1731.712 km |
| Height difference | -16.958 km |
| Relative speed | 12.153 km/s |
| Angle between velocity vectors | 107° |
| Geographic position | 81.5°N, 69.2°W |
| Height | 635 km |
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