| Primary satellite | Secondary satellite |
| Name | Transit 4A | FENGYUN 1C DEB |
| Spacetrack catalog number | 116 | 32126 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 04:19 | 2021 Jan 15 05:18 |
| Time of closest approach (UTC) | 2020 Nov 27 14:00:18.766 |
| Minimum distance | 8.335 km |
| Height difference | 2.705 km |
| Relative speed | 14.409 km/s |
| Angle between velocity vectors | 150° |
| Geographic position | 57.8°S, 150.2°W |
| Height | 896 km |
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