| Primary satellite | Secondary satellite |
| Name | KKS-1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 33499 | 34823 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 Jun 07 13:44 | 2023 Jun 07 01:43 |
| Time of closest approach (UTC) | 2023 Apr 09 01:04:23.557 |
| Minimum distance | 336.778 km |
| Height difference | 4.829 km |
| Relative speed | 14.660 km/s |
| Angle between velocity vectors | 151° |
| Geographic position | 65.0°N, 24.8°W |
| Height | 645 km |
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