| Primary satellite | Secondary satellite |
| Name | COSMO-SKYMED 1 | PSLV R/B |
| Spacetrack catalog number | 31598 | 40720 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 21 01:20 | 2021 Apr 20 20:20 |
| Time of closest approach (UTC) | 2021 Mar 04 15:28:37.235 |
| Minimum distance | 151.465 km |
| Height difference | 4.507 km |
| Relative speed | 11.263 km/s |
| Angle between velocity vectors | 97° |
| Geographic position | 77.3°S, 3.5°W |
| Height | 649 km |
|