| Primary satellite | Secondary satellite |
| Name | CSL-04 Rocket | IRS P6 |
| Spacetrack catalog number | 25732 | 28050 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 16 18:04 | 2021 Apr 16 20:10 |
| Time of closest approach (UTC) | 2021 Mar 08 21:31:50.748 |
| Minimum distance | 8.273 km |
| Height difference | 1.154 km |
| Relative speed | 10.579 km/s |
| Angle between velocity vectors | 91° |
| Geographic position | 77.4°S, 18.6°E |
| Height | 866 km |
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