| Primary satellite | Secondary satellite |
| Name | Cosmos 2237 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 22566 | 30539 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 12:15 | 2021 Mar 08 22:12 |
| Time of closest approach (UTC) | 2021 Jan 21 00:13:48.101 |
| Minimum distance | 25.943 km |
| Height difference | -0.223 km |
| Relative speed | 9.469 km/s |
| Angle between velocity vectors | 80° |
| Geographic position | 67.0°N, 118.9°E |
| Height | 860 km |
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