| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | COSMOS 2251 DEB |
| Spacetrack catalog number | 23088 | 35455 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Oct 01 22:08 | 2023 Oct 01 06:02 |
| Time of closest approach (UTC) | 2023 Jun 11 05:57:50.017 |
| Minimum distance | 3237.256 km |
| Height difference | -33.346 km |
| Relative speed | 14.567 km/s |
| Angle between velocity vectors | 157° |
| Geographic position | 44.3°N, 172.7°W |
| Height | 849 km |
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