| Primary satellite | Secondary satellite |
| Name | FengYun 1-2 T | COSMOS 1275 DEB |
| Spacetrack catalog number | 20855 | 42152 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:56 | 2021 Jan 15 12:35 |
| Time of closest approach (UTC) | 2020 Nov 28 14:55:54.048 |
| Minimum distance | 9.543 km |
| Height difference | -4.000 km |
| Relative speed | 14.769 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 75.3°S, 163.9°W |
| Height | 906 km |
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