| Primary satellite | Secondary satellite |
| Name | COSMO-SKYMED 1 | Oscar 11 |
| Spacetrack catalog number | 31598 | 14781 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 11 04:46 | 2021 Apr 10 20:48 |
| Time of closest approach (UTC) | 2021 Mar 03 01:02:37.437 |
| Minimum distance | 25.809 km |
| Height difference | -3.303 km |
| Relative speed | 14.954 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 0.4°N, 70.7°E |
| Height | 626 km |
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