| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | DMSP 5D-2 F13 DEB |
| Spacetrack catalog number | 17974 | 40611 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 18:17 | 2021 Jan 16 10:44 |
| Time of closest approach (UTC) | 2020 Dec 04 21:39:07.732 |
| Minimum distance | 28.506 km |
| Height difference | -0.619 km |
| Relative speed | 14.103 km/s |
| Angle between velocity vectors | 143° |
| Geographic position | 68.4°N, 141.8°E |
| Height | 856 km |
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