| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Sep Motor Cover |
| Spacetrack catalog number | 35031 | 22577 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 22 15:54 |
| Time of closest approach (UTC) | 2024 Dec 25 23:46:09.123 |
| Minimum distance | 3.536 km |
| Height difference | 3.375 km |
| Relative speed | 12.346 km/s |
| Angle between velocity vectors | 111° |
| Geographic position | 57.9°N, 122.6°E |
| Height | 768 km |
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