| Primary satellite | Secondary satellite |
| Name | H-2A R/B | COSMOS 2251 DEB |
| Spacetrack catalog number | 27601 | 36558 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 24 13:55 | 2023 Sep 24 08:08 |
| Time of closest approach (UTC) | 2023 Jun 05 02:47:07.890 |
| Minimum distance | 5028.086 km |
| Height difference | -12.413 km |
| Relative speed | 9.781 km/s |
| Angle between velocity vectors | 82° |
| Geographic position | 43.5°S, 25.1°E |
| Height | 780 km |
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