| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Kosmos-681 |
| Spacetrack catalog number | 34910 | 7439 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:21 | 2024 Dec 22 11:49 |
| Time of closest approach (UTC) | 2024 Dec 28 05:03:37.329 |
| Minimum distance | 3.864 km |
| Height difference | 3.788 km |
| Relative speed | 8.090 km/s |
| Angle between velocity vectors | 70° |
| Geographic position | 70.3°S, 66.0°E |
| Height | 1492 km |
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