| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 494 Rocket |
| Spacetrack catalog number | 35959 | 6061 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:36 | 2024 Dec 22 20:36 |
| Time of closest approach (UTC) | 2024 Dec 23 20:25:17.723 |
| Minimum distance | 3.850 km |
| Height difference | 1.415 km |
| Relative speed | 10.551 km/s |
| Angle between velocity vectors | 90° |
| Geographic position | 67.3°N, 116.7°W |
| Height | 777 km |
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