| Primary satellite | Secondary satellite |
| Name | Cosmos 1627 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 15506 | 30493 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 04:13 | 2021 Jan 15 09:06 |
| Time of closest approach (UTC) | 2020 Dec 08 22:59:24.630 |
| Minimum distance | 35.137 km |
| Height difference | -7.862 km |
| Relative speed | 14.041 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 81.7°N, 134.9°E |
| Height | 964 km |
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