| Primary satellite | Secondary satellite |
| Name | Cosmos 2237 Rocket | Cosmos 1844 Rocket |
| Spacetrack catalog number | 22566 | 17974 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Mar 08 12:15 | 2021 Mar 08 22:00 |
| Time of closest approach (UTC) | 2021 Jan 18 18:30:45.979 |
| Minimum distance | 6.629 km |
| Height difference | -3.322 km |
| Relative speed | 13.957 km/s |
| Angle between velocity vectors | 140° |
| Geographic position | 17.7°S, 16.1°W |
| Height | 851 km |
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