| Primary satellite | Secondary satellite |
| Name | CZ-4B R/B | TIANHUI 1 |
| Spacetrack catalog number | 33410 | 36985 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 22 12:29 | 2021 Jan 22 18:42 |
| Time of closest approach (UTC) | 2020 Dec 03 18:58:06.822 |
| Minimum distance | 172.217 km |
| Height difference | -0.649 km |
| Relative speed | 14.834 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 50.5°S, 21.2°W |
| Height | 523 km |
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