| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Transtage 4 |
| Spacetrack catalog number | 34729 | 3494 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 09:04 | 2024 Dec 23 13:38 |
| Time of closest approach (UTC) | 2024 Dec 25 04:27:31.327 |
| Minimum distance | 12.554 km |
| Height difference | 0.654 km |
| Relative speed | 10.453 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 27.9°S, 160.5°E |
| Height | 678 km |
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