| Primary satellite | Secondary satellite |
| Name | FengYun 1-2 T | deb Kosmos-1275 |
| Spacetrack catalog number | 20855 | 13619 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:56 | 2021 Jan 17 16:49 |
| Time of closest approach (UTC) | 2020 Nov 29 11:25:48.671 |
| Minimum distance | 30.501 km |
| Height difference | 4.675 km |
| Relative speed | 12.913 km/s |
| Angle between velocity vectors | 122° |
| Geographic position | 80.8°S, 146.4°W |
| Height | 908 km |
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