| Primary satellite | Secondary satellite |
| Name | OAO 3 Copernicus | COSMOS 2251 DEB |
| Spacetrack catalog number | 6153 | 33984 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 21 20:15 | 2023 Sep 21 22:35 |
| Time of closest approach (UTC) | 2023 Jun 11 23:03:53.581 |
| Minimum distance | 2803.394 km |
| Height difference | -2.160 km |
| Relative speed | 7.876 km/s |
| Angle between velocity vectors | 63° |
| Geographic position | 29.3°N, 44.3°E |
| Height | 703 km |
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