| Primary satellite | Secondary satellite |
| Name | Cosmos 2237 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 22566 | 30521 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 05 13:00 | 2021 Mar 05 17:02 |
| Time of closest approach (UTC) | 2021 Jan 17 06:35:31.871 |
| Minimum distance | 1.784 km |
| Height difference | 1.534 km |
| Relative speed | 14.694 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 39.3°N, 144.8°E |
| Height | 856 km |
|