| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 23088 | 35669 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Oct 01 22:08 | 2023 Sep 27 17:37 |
| Time of closest approach (UTC) | 2023 Jun 12 18:44:34.594 |
| Minimum distance | 502.319 km |
| Height difference | 19.962 km |
| Relative speed | 14.167 km/s |
| Angle between velocity vectors | 143° |
| Geographic position | 14.5°N, 164.5°W |
| Height | 842 km |
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