| Primary satellite | Secondary satellite |
| Name | GP-B | FENGYUN 1C DEB |
| Spacetrack catalog number | 28230 | 30664 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 12:03 | 2021 Jan 14 15:18 |
| Time of closest approach (UTC) | 2020 Dec 06 15:07:29.413 |
| Minimum distance | 226.380 km |
| Height difference | -1.841 km |
| Relative speed | 9.810 km/s |
| Angle between velocity vectors | 81° |
| Geographic position | 79.7°S, 151.0°E |
| Height | 660 km |
|