| Primary satellite | Secondary satellite |
| Name | Cosmos 540 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 6324 | 34914 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 19 16:20 | 2023 Mar 20 08:11 |
| Time of closest approach (UTC) | 2023 Feb 05 22:12:25.019 |
| Minimum distance | 433.076 km |
| Height difference | 9.228 km |
| Relative speed | 13.550 km/s |
| Angle between velocity vectors | 131° |
| Geographic position | 45.3°N, 57.5°W |
| Height | 752 km |
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