| Primary satellite | Secondary satellite |
| Name | STRAND 1 | Cosmos 372 Rocket |
| Spacetrack catalog number | 39090 | 4589 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2021 Mar 01 09:54 | 2021 Mar 01 21:28 |
| Time of closest approach (UTC) | 2021 Jan 17 16:27:54.302 |
| Minimum distance | 8.681 km |
| Height difference | -2.628 km |
| Relative speed | 14.841 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 52.8°N, 152.2°W |
| Height | 779 km |
|