| Primary satellite | Secondary satellite |
| Name | ALOS | GAOFEN 9 DEB |
| Spacetrack catalog number | 28931 | 44600 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:48 | 2021 Jan 16 09:46 |
| Time of closest approach (UTC) | 2020 Dec 07 00:29:53.927 |
| Minimum distance | 4.950 km |
| Height difference | -1.228 km |
| Relative speed | 1.029 km/s |
| Angle between velocity vectors | 8° |
| Geographic position | 82.1°N, 155.3°E |
| Height | 699 km |
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