| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 39586 | 12700 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 02:55 | 2024 Dec 22 20:43 |
| Time of closest approach (UTC) | 2024 Dec 24 15:31:40.197 |
| Minimum distance | 3.760 km |
| Height difference | -1.389 km |
| Relative speed | 14.271 km/s |
| Angle between velocity vectors | 150° |
| Geographic position | 39.9°N, 18.7°W |
| Height | 887 km |
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