| Primary satellite | Secondary satellite |
| Name | UWE-3 | COSMOS 2251 DEB |
| Spacetrack catalog number | 39446 | 34014 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 May 31 19:42 | 2023 May 31 18:44 |
| Time of closest approach (UTC) | 2023 Apr 02 03:14:29.385 |
| Minimum distance | 987.047 km |
| Height difference | -7.427 km |
| Relative speed | 5.271 km/s |
| Angle between velocity vectors | 41° |
| Geographic position | 57.4°N, 158.6°E |
| Height | 682 km |
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