| Primary satellite | Secondary satellite |
| Name | Meteor 1-21 | FENGYUN 1C DEB |
| Spacetrack catalog number | 7714 | 30955 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 04:29 | 2020 Dec 23 21:35 |
| Time of closest approach (UTC) | 2020 Dec 06 01:31:11.434 |
| Minimum distance | 1.607 km |
| Height difference | 0.846 km |
| Relative speed | 14.792 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 74.6°N, 27.0°W |
| Height | 898 km |
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