| Primary satellite | Secondary satellite |
| Name | KKS-1 | COSMOS 2251 DEB |
| Spacetrack catalog number | 33499 | 37337 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 Apr 01 20:11 | 2023 Apr 01 14:37 |
| Time of closest approach (UTC) | 2023 Jan 29 06:18:38.893 |
| Minimum distance | 2921.205 km |
| Height difference | 14.935 km |
| Relative speed | 15.006 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 1.2°N, 123.0°W |
| Height | 649 km |
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