| Primary satellite | Secondary satellite |
| Name | Transit 2A Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 47 | 35840 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 06 21:03 | 2024 Dec 05 03:19 |
| Time of closest approach (UTC) | 2024 Nov 05 04:25:47.982 |
| Minimum distance | 136.319 km |
| Height difference | -0.256 km |
| Relative speed | 1.325 km/s |
| Angle between velocity vectors | 10° |
| Geographic position | 41.4°N, 125.2°W |
| Height | 715 km |
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