| Primary satellite | Secondary satellite |
| Name | Tiros 1 | FENGYUN 1C DEB |
| Spacetrack catalog number | 29 | 30664 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 16:32 | 2021 Jan 17 20:03 |
| Time of closest approach (UTC) | 2020 Nov 28 18:16:59.234 |
| Minimum distance | 252.950 km |
| Height difference | 3.082 km |
| Relative speed | 12.503 km/s |
| Angle between velocity vectors | 112° |
| Geographic position | 47.6°N, 15.2°E |
| Height | 659 km |
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