| Primary satellite | Secondary satellite |
| Name | ALOS | deb Kosmos-923 |
| Spacetrack catalog number | 28931 | 14802 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:48 | 2021 Jan 17 14:28 |
| Time of closest approach (UTC) | 2020 Dec 07 11:46:26.659 |
| Minimum distance | 8.808 km |
| Height difference | -2.700 km |
| Relative speed | 14.964 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 40.9°N, 59.8°E |
| Height | 692 km |
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