| Primary satellite | Secondary satellite |
| Name | Landsat 7 | IRIDIUM 33 DEB |
| Spacetrack catalog number | 25682 | 34540 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 02:40 | 2021 Jan 14 18:36 |
| Time of closest approach (UTC) | 2020 Dec 01 16:15:02.813 |
| Minimum distance | 83.581 km |
| Height difference | -1.958 km |
| Relative speed | 1.975 km/s |
| Angle between velocity vectors | 15° |
| Geographic position | 38.8°S, 86.0°E |
| Height | 717 km |
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