| Primary satellite | Secondary satellite |
| Name | SPOT 1 Rocket Y | COSMOS 2251 DEB |
| Spacetrack catalog number | 17129 | 34346 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:50 | 2024 Dec 23 00:48 |
| Time of closest approach (UTC) | 2024 Dec 25 17:32:19.089 |
| Minimum distance | 4.905 km |
| Height difference | 1.216 km |
| Relative speed | 14.855 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 32.2°N, 145.4°W |
| Height | 833 km |
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