| Primary satellite | Secondary satellite |
| Name | Courier 1B | FENGYUN 1C DEB |
| Spacetrack catalog number | 58 | 29734 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 03 17:26 | 2021 Mar 03 12:04 |
| Time of closest approach (UTC) | 2021 Jan 26 16:40:51.944 |
| Minimum distance | 4.989 km |
| Height difference | -0.495 km |
| Relative speed | 13.105 km/s |
| Angle between velocity vectors | 126° |
| Geographic position | 10.6°N, 45.7°E |
| Height | 1092 km |
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