| Primary satellite | Secondary satellite |
| Name | Cosmos 2218 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 22208 | 35171 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 16 22:58 | 2021 Apr 16 08:01 |
| Time of closest approach (UTC) | 2021 Mar 03 09:30:09.898 |
| Minimum distance | 9.068 km |
| Height difference | 6.213 km |
| Relative speed | 14.587 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 79.3°S, 12.4°E |
| Height | 990 km |
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