| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 494 |
| Spacetrack catalog number | 39586 | 6059 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 02:55 | 2024 Dec 23 04:50 |
| Time of closest approach (UTC) | 2024 Dec 23 22:10:52.000 |
| Minimum distance | 4.385 km |
| Height difference | 4.059 km |
| Relative speed | 13.887 km/s |
| Angle between velocity vectors | 136° |
| Geographic position | 42.5°N, 92.4°E |
| Height | 778 km |
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