| Primary satellite | Secondary satellite |
| Name | Meteor 1-21 | FENGYUN 1C DEB |
| Spacetrack catalog number | 7714 | 29789 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 19 09:21 | 2021 Jan 19 10:17 |
| Time of closest approach (UTC) | 2020 Dec 07 06:13:48.511 |
| Minimum distance | 6.952 km |
| Height difference | -1.391 km |
| Relative speed | 14.936 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 17.7°N, 131.2°W |
| Height | 872 km |
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