| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Delta 89 |
| Spacetrack catalog number | 35824 | 7940 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 06:36 | 2024 Dec 23 05:11 |
| Time of closest approach (UTC) | 2024 Dec 26 15:26:57.042 |
| Minimum distance | 3.464 km |
| Height difference | -2.804 km |
| Relative speed | 14.412 km/s |
| Angle between velocity vectors | 146° |
| Geographic position | 71.4°N, 85.3°E |
| Height | 777 km |
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