| Primary satellite | Secondary satellite |
| Name | SKYMED 3 | COSMOS 2251 DEB |
| Spacetrack catalog number | 33412 | 34747 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 11 18:08 | 2021 Apr 11 13:33 |
| Time of closest approach (UTC) | 2021 Mar 02 04:51:14.580 |
| Minimum distance | 72.361 km |
| Height difference | -4.193 km |
| Relative speed | 14.315 km/s |
| Angle between velocity vectors | 143° |
| Geographic position | 71.2°N, 142.5°W |
| Height | 635 km |
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