| Primary satellite | Secondary satellite |
| Name | DELTA 1 DEB | COSMOS 2251 DEB |
| Spacetrack catalog number | 42661 | 34420 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 16:34 | 2024 Dec 22 21:48 |
| Time of closest approach (UTC) | 2024 Dec 25 07:00:28.956 |
| Minimum distance | 4.864 km |
| Height difference | -2.563 km |
| Relative speed | 9.361 km/s |
| Angle between velocity vectors | 78° |
| Geographic position | 69.6°N, 4.3°W |
| Height | 761 km |
|