| Primary satellite | Secondary satellite |
| Name | Cosmos 1655 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 15752 | 37912 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 04:41 | 2021 Jan 15 06:40 |
| Time of closest approach (UTC) | 2020 Dec 09 03:57:20.423 |
| Minimum distance | 3.419 km |
| Height difference | 0.843 km |
| Relative speed | 14.626 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 65.8°S, 64.5°W |
| Height | 1016 km |
|