| Primary satellite | Secondary satellite |
| Name | Transit 2A | Cosmos 372 Rocket |
| Spacetrack catalog number | 45 | 4589 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2021 Feb 25 16:11 | 2021 Feb 25 19:12 |
| Time of closest approach (UTC) | 2021 Jan 29 14:54:12.757 |
| Minimum distance | 5.012 km |
| Height difference | 4.051 km |
| Relative speed | 11.744 km/s |
| Angle between velocity vectors | 104° |
| Geographic position | 57.0°N, 166.6°W |
| Height | 772 km |
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