| Primary satellite | Secondary satellite |
| Name | Meteor 1-21 | FENGYUN 1C DEB |
| Spacetrack catalog number | 7714 | 33623 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 25 20:33 | 2020 Dec 24 11:06 |
| Time of closest approach (UTC) | 2020 Dec 07 23:34:50.329 |
| Minimum distance | 2.632 km |
| Height difference | -1.757 km |
| Relative speed | 14.794 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 76.8°N, 5.3°E |
| Height | 900 km |
|