| Primary satellite | Secondary satellite |
| Name | deb Agena D | COSMOS 2251 DEB |
| Spacetrack catalog number | 17720 | 35669 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:55 | 2024 Dec 21 17:21 |
| Time of closest approach (UTC) | 2024 Dec 25 18:02:40.111 |
| Minimum distance | 3.005 km |
| Height difference | -2.941 km |
| Relative speed | 14.957 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 40.6°S, 158.0°W |
| Height | 830 km |
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