| Primary satellite | Secondary satellite |
| Name | Cosmos 1844 Rocket | deb Surcal |
| Spacetrack catalog number | 17974 | 19245 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 10:55 | 2021 Jan 17 12:56 |
| Time of closest approach (UTC) | 2020 Dec 01 09:53:43.408 |
| Minimum distance | 26.840 km |
| Height difference | 2.791 km |
| Relative speed | 5.342 km/s |
| Angle between velocity vectors | 42° |
| Geographic position | 69.1°S, 154.7°W |
| Height | 849 km |
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