| Primary satellite | Secondary satellite |
| Name | Transit 2A Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 47 | 37424 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 13:08 | 2021 Mar 07 11:41 |
| Time of closest approach (UTC) | 2021 Jan 27 04:02:07.117 |
| Minimum distance | 11.489 km |
| Height difference | 4.175 km |
| Relative speed | 14.552 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 54.9°N, 127.2°E |
| Height | 722 km |
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