| Primary satellite | Secondary satellite |
| Name | Cosmos 1400 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 13403 | 31820 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 09 02:06 | 2021 Mar 05 04:48 |
| Time of closest approach (UTC) | 2021 Jan 18 05:59:22.887 |
| Minimum distance | 8.206 km |
| Height difference | -4.640 km |
| Relative speed | 14.983 km/s |
| Angle between velocity vectors | 160° |
| Geographic position | 81.0°N, 76.7°E |
| Height | 582 km |
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