| Primary satellite | Secondary satellite |
| Name | Cosmos 1842 Rocket | deb Kosmos-374 |
| Spacetrack catalog number | 17912 | 4667 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 11 14:42 | 2021 Apr 11 08:19 |
| Time of closest approach (UTC) | 2021 Mar 06 21:28:06.152 |
| Minimum distance | 11.723 km |
| Height difference | 1.479 km |
| Relative speed | 14.244 km/s |
| Angle between velocity vectors | 137° |
| Geographic position | 34.6°S, 86.3°W |
| Height | 642 km |
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