| 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 21 11:59 | 2021 Jan 20 01:44 |
| Time of closest approach (UTC) | 2020 Nov 30 10:57:45.057 |
| Minimum distance | 133.223 km |
| Height difference | 5.100 km |
| Relative speed | 9.536 km/s |
| Angle between velocity vectors | 81° |
| Geographic position | 21.8°N, 145.7°E |
| Height | 1000 km |
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