| Primary satellite | Secondary satellite |
| Name | Transit 4A | FENGYUN 1C DEB |
| Spacetrack catalog number | 116 | 31368 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Jan 22 17:16 | 2020 Dec 23 04:28 |
| Time of closest approach (UTC) | 2020 Dec 01 16:17:01.183 |
| Minimum distance | 25.203 km |
| Height difference | 1.557 km |
| Relative speed | 8.856 km/s |
| Angle between velocity vectors | 73° |
| Geographic position | 61.3°S, 153.0°E |
| Height | 896 km |
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