| Primary satellite | Secondary satellite |
| Name | Courier 1B | FENGYUN 1C DEB |
| Spacetrack catalog number | 58 | 31836 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 16:19 | 2021 Jan 16 20:18 |
| Time of closest approach (UTC) | 2020 Nov 30 10:57:42.588 |
| Minimum distance | 160.482 km |
| Height difference | 5.565 km |
| Relative speed | 9.536 km/s |
| Angle between velocity vectors | 81° |
| Geographic position | 21.8°N, 145.6°E |
| Height | 1000 km |
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