| Primary satellite | Secondary satellite |
| Name | ARIANE 5 R/B | COSMOS 2251 DEB |
| Spacetrack catalog number | 27387 | 36533 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 27 21:53 | 2023 Mar 27 15:54 |
| Time of closest approach (UTC) | 2023 Feb 01 15:41:52.711 |
| Minimum distance | 702.818 km |
| Height difference | -1.428 km |
| Relative speed | 11.491 km/s |
| Angle between velocity vectors | 101° |
| Geographic position | 76.5°N, 38.2°W |
| Height | 782 km |
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