| Primary satellite | Secondary satellite |
| Name | Transit 4A | FENGYUN 1C DEB |
| Spacetrack catalog number | 116 | 31986 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 04:19 | 2020 Dec 24 02:32 |
| Time of closest approach (UTC) | 2020 Nov 27 12:13:25.643 |
| Minimum distance | 29.371 km |
| Height difference | 3.797 km |
| Relative speed | 10.322 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 64.5°S, 144.0°W |
| Height | 892 km |
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