| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Cosmos 1354 |
| Spacetrack catalog number | 35031 | 13148 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 05:55 | 2024 Dec 22 12:23 |
| Time of closest approach (UTC) | 2024 Dec 27 19:44:56.854 |
| Minimum distance | 3.911 km |
| Height difference | 0.000 km |
| Relative speed | 14.345 km/s |
| Angle between velocity vectors | 148° |
| Geographic position | 2.3°S, 28.7°W |
| Height | 782 km |
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