| Primary satellite | Secondary satellite |
| Name | Cosmos 1937 Rocket | CZ-4C R/B |
| Spacetrack catalog number | 19039 | 43012 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 18 01:40 | 2021 Jan 17 20:52 |
| Time of closest approach (UTC) | 2020 Nov 28 14:13:04.270 |
| Minimum distance | 5.883 km |
| Height difference | 5.620 km |
| Relative speed | 14.778 km/s |
| Angle between velocity vectors | 164° |
| Geographic position | 60.9°N, 112.4°W |
| Height | 766 km |
|