| Primary satellite | Secondary satellite |
| Name | AO-91 | FENGYUN 1C DEB |
| Spacetrack catalog number | 43017 | 29842 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 06 11:05 | 2021 Mar 06 07:52 |
| Time of closest approach (UTC) | 2021 Jan 21 21:12:08.113 |
| Minimum distance | 104.950 km |
| Height difference | 1.465 km |
| Relative speed | 12.314 km/s |
| Angle between velocity vectors | 113° |
| Geographic position | 74.4°S, 3.4°E |
| Height | 828 km |
|