| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb r/b Ablestar |
| Spacetrack catalog number | 39586 | 416 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 21 02:55 | 2024 Dec 22 18:56 |
| Time of closest approach (UTC) | 2024 Dec 24 03:33:48.998 |
| Minimum distance | 3.735 km |
| Height difference | 0.867 km |
| Relative speed | 9.172 km/s |
| Angle between velocity vectors | 76° |
| Geographic position | 64.0°N, 140.2°E |
| Height | 863 km |
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