| Primary satellite | Secondary satellite |
| Name | deb Delta | COSMOS 2251 DEB |
| Spacetrack catalog number | 21473 | 33819 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:26 | 2024 Dec 23 11:54 |
| Time of closest approach (UTC) | 2024 Dec 26 11:11:48.555 |
| Minimum distance | 6.298 km |
| Height difference | -3.010 km |
| Relative speed | 6.832 km/s |
| Angle between velocity vectors | 55° |
| Geographic position | 60.9°S, 71.5°E |
| Height | 879 km |
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