| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 1943 |
| Spacetrack catalog number | 39586 | 19119 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 02:55 | 2024 Dec 22 21:08 |
| Time of closest approach (UTC) | 2024 Dec 23 16:25:59.610 |
| Minimum distance | 2.346 km |
| Height difference | -2.335 km |
| Relative speed | 6.041 km/s |
| Angle between velocity vectors | 48° |
| Geographic position | 70.5°S, 38.0°E |
| Height | 864 km |
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