| Primary satellite | Secondary satellite |
| Name | Cosmos 1356 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 13154 | 32445 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 18:29 | 2021 Mar 06 22:07 |
| Time of closest approach (UTC) | 2021 Jan 24 15:39:54.057 |
| Minimum distance | 7.431 km |
| Height difference | -6.972 km |
| Relative speed | 15.170 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 34.9°N, 170.6°W |
| Height | 568 km |
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