| Primary satellite | Secondary satellite |
| Name | HJ-1C | GAOFEN 8 DEB |
| Spacetrack catalog number | 38997 | 43423 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 22 18:40 | 2021 Jan 21 16:55 |
| Time of closest approach (UTC) | 2020 Dec 09 09:35:36.514 |
| Minimum distance | 6.268 km |
| Height difference | 0.372 km |
| Relative speed | 13.765 km/s |
| Angle between velocity vectors | 129° |
| Geographic position | 72.9°S, 55.2°W |
| Height | 469 km |
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