| Primary satellite | Secondary satellite |
| Name | Transit 2A Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 47 | 33989 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Nov 28 13:12 | 2023 Nov 28 13:43 |
| Time of closest approach (UTC) | 2023 Feb 01 19:43:13.003 |
| Minimum distance | 5471.907 km |
| Height difference | 126.863 km |
| Relative speed | 11.651 km/s |
| Angle between velocity vectors | 102° |
| Geographic position | 62.1°S, 13.0°W |
| Height | 645 km |
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