| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | OBJECT D |
| Spacetrack catalog number | 39554 | 58499 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 04:38 | 2024 Dec 23 11:06 |
| Time of closest approach (UTC) | 2024 Dec 28 02:05:39.009 |
| Minimum distance | 4.839 km |
| Height difference | 0.871 km |
| Relative speed | 14.846 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 63.1°S, 22.5°W |
| Height | 643 km |
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