| Primary satellite | Secondary satellite |
| Name | Transit 4A | FENGYUN 1C DEB |
| Spacetrack catalog number | 116 | 30669 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Jan 23 08:47 | 2021 Jan 23 14:11 |
| Time of closest approach (UTC) | 2020 Nov 28 06:58:01.739 |
| Minimum distance | 6.301 km |
| Height difference | -1.333 km |
| Relative speed | 14.578 km/s |
| Angle between velocity vectors | 157° |
| Geographic position | 47.5°S, 156.8°W |
| Height | 887 km |
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