| Primary satellite | Secondary satellite |
| Name | ALOS | NOAA 16 DEB |
| Spacetrack catalog number | 28931 | 41148 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 16 04:12 | 2021 Apr 16 05:35 |
| Time of closest approach (UTC) | 2021 Mar 04 15:03:54.738 |
| Minimum distance | 33.646 km |
| Height difference | 0.774 km |
| Relative speed | 14.893 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 7.0°S, 15.4°E |
| Height | 689 km |
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