| Primary satellite | Secondary satellite |
| Name | deb Explorer IX | deb Delta 139 |
| Spacetrack catalog number | 85 | 13566 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Jan 22 13:36 | 2021 Jan 22 11:47 |
| Time of closest approach (UTC) | 2020 Nov 30 20:23:01.737 |
| Minimum distance | 1225.941 km |
| Height difference | 27.269 km |
| Relative speed | 10.400 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 34.7°S, 114.9°E |
| Height | 750 km |
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