| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | SOZ |
| Spacetrack catalog number | 17974 | 15338 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 16 18:17 | 2021 Jan 16 06:23 |
| Time of closest approach (UTC) | 2020 Dec 05 23:02:32.903 |
| Minimum distance | 137.049 km |
| Height difference | -0.181 km |
| Relative speed | 4.787 km/s |
| Angle between velocity vectors | 38° |
| Geographic position | 66.3°N, 109.2°E |
| Height | 856 km |
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