| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DELTA 1 DEB |
| Spacetrack catalog number | 34910 | 37662 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:21 | 2024 Dec 21 19:03 |
| Time of closest approach (UTC) | 2024 Dec 25 14:59:31.516 |
| Minimum distance | 0.491 km |
| Height difference | 0.393 km |
| Relative speed | 8.691 km/s |
| Angle between velocity vectors | 71° |
| Geographic position | 67.6°N, 21.6°E |
| Height | 862 km |
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