| Primary satellite | Secondary satellite |
| Name | Cosmos 2237 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 22566 | 31182 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 12:15 | 2021 Mar 08 06:58 |
| Time of closest approach (UTC) | 2021 Jan 19 09:12:38.523 |
| Minimum distance | 16.985 km |
| Height difference | 5.443 km |
| Relative speed | 14.168 km/s |
| Angle between velocity vectors | 145° |
| Geographic position | 67.5°N, 9.1°W |
| Height | 859 km |
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