| Primary satellite | Secondary satellite |
| Name | Cosmos 1937 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 19039 | 30738 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 18 01:40 | 2021 Jan 17 19:48 |
| Time of closest approach (UTC) | 2020 Nov 28 17:42:46.719 |
| Minimum distance | 146.374 km |
| Height difference | -2.401 km |
| Relative speed | 14.321 km/s |
| Angle between velocity vectors | 146° |
| Geographic position | 71.8°N, 75.7°W |
| Height | 779 km |
|