| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | DELTA 1 DEB |
| Spacetrack catalog number | 33986 | 27720 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 11:32 | 2024 Dec 23 08:13 |
| Time of closest approach (UTC) | 2024 Dec 25 06:22:36.357 |
| Minimum distance | 4.702 km |
| Height difference | 2.656 km |
| Relative speed | 11.942 km/s |
| Angle between velocity vectors | 102° |
| Geographic position | 73.8°N, 148.6°E |
| Height | 751 km |
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