| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 1515 Rocket |
| Spacetrack catalog number | 37966 | 14552 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 19 08:48 | 2024 Dec 23 03:51 |
| Time of closest approach (UTC) | 2024 Dec 24 17:14:57.907 |
| Minimum distance | 3.101 km |
| Height difference | -2.594 km |
| Relative speed | 14.479 km/s |
| Angle between velocity vectors | 146° |
| Geographic position | 45.2°N, 38.1°E |
| Height | 614 km |
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