| Primary satellite | Secondary satellite |
| Name | Spot 4 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 25261 | 37973 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 23:46 | 2024 Dec 21 09:34 |
| Time of closest approach (UTC) | 2024 Dec 26 04:14:07.893 |
| Minimum distance | 2.192 km |
| Height difference | 2.102 km |
| Relative speed | 13.704 km/s |
| Angle between velocity vectors | 134° |
| Geographic position | 73.8°S, 3.4°W |
| Height | 798 km |
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