| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Agena D |
| Spacetrack catalog number | 35789 | 4135 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:34 | 2024 Dec 23 04:50 |
| Time of closest approach (UTC) | 2024 Dec 27 21:21:01.998 |
| Minimum distance | 4.430 km |
| Height difference | -4.322 km |
| Relative speed | 9.485 km/s |
| Angle between velocity vectors | 79° |
| Geographic position | 66.3°S, 108.8°E |
| Height | 806 km |
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