| Primary satellite | Secondary satellite |
| Name | Spot 4 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 25261 | 34297 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 23:46 | 2024 Dec 22 17:14 |
| Time of closest approach (UTC) | 2024 Dec 26 12:33:50.787 |
| Minimum distance | 3.008 km |
| Height difference | -2.893 km |
| Relative speed | 14.645 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 67.3°S, 117.7°W |
| Height | 797 km |
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