| Primary satellite | Secondary satellite |
| Name | Cosmos 2150 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 21419 | 31510 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 20 04:34 | 2021 Jan 19 08:31 |
| Time of closest approach (UTC) | 2020 Dec 08 11:27:51.646 |
| Minimum distance | 2.461 km |
| Height difference | 0.697 km |
| Relative speed | 13.348 km/s |
| Angle between velocity vectors | 128° |
| Geographic position | 74.1°S, 151.2°E |
| Height | 832 km |
|