| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Geosat |
| Spacetrack catalog number | 35789 | 15595 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 23 00:54 |
| Time of closest approach (UTC) | 2024 Dec 26 02:40:15.372 |
| Minimum distance | 3.128 km |
| Height difference | 2.785 km |
| Relative speed | 14.877 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 70.2°N, 157.8°W |
| Height | 771 km |
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