| Primary satellite | Secondary satellite |
| Name | ALOS | SJ-11-03 |
| Spacetrack catalog number | 28931 | 37730 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:48 | 2021 Jan 17 20:23 |
| Time of closest approach (UTC) | 2020 Dec 09 00:54:55.594 |
| Minimum distance | 10.786 km |
| Height difference | 0.496 km |
| Relative speed | 6.930 km/s |
| Angle between velocity vectors | 55° |
| Geographic position | 81.2°S, 12.6°W |
| Height | 712 km |
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