| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | Cosmos 2237 Rocket |
| Spacetrack catalog number | 17974 | 22566 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 16 11:13 | 2021 Jan 16 14:40 |
| Time of closest approach (UTC) | 2020 Dec 06 04:31:18.733 |
| Minimum distance | 89.664 km |
| Height difference | -3.380 km |
| Relative speed | 13.976 km/s |
| Angle between velocity vectors | 140° |
| Geographic position | 19.2°N, 148.1°E |
| Height | 840 km |
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