| Primary satellite | Secondary satellite |
| Name | AO-91 | FENGYUN 1C DEB |
| Spacetrack catalog number | 43017 | 29965 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 04 16:53 | 2021 Mar 04 15:52 |
| Time of closest approach (UTC) | 2021 Jan 20 22:28:03.422 |
| Minimum distance | 119.664 km |
| Height difference | 1.978 km |
| Relative speed | 12.393 km/s |
| Angle between velocity vectors | 113° |
| Geographic position | 74.0°S, 14.8°W |
| Height | 831 km |
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