| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 1328 Rocket |
| Spacetrack catalog number | 47059 | 12988 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 18 23:17 | 2024 Dec 23 02:24 |
| Time of closest approach (UTC) | 2024 Dec 28 16:44:05.418 |
| Minimum distance | 3.415 km |
| Height difference | 3.323 km |
| Relative speed | 14.211 km/s |
| Angle between velocity vectors | 140° |
| Geographic position | 53.6°N, 32.4°E |
| Height | 607 km |
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