| Primary satellite | Secondary satellite |
| Name | CZ-4 R/B | TIANQI-6 |
| Spacetrack catalog number | 29507 | 46810 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 12 19:39 | 2021 Apr 13 20:25 |
| Time of closest approach (UTC) | 2021 Mar 05 16:58:39.338 |
| Minimum distance | 3.340 km |
| Height difference | 2.560 km |
| Relative speed | 11.301 km/s |
| Angle between velocity vectors | 97° |
| Geographic position | 35.1°N, 141.7°W |
| Height | 594 km |
|