| Primary satellite | Secondary satellite |
| Name | Iridium 4 Rocket | MOS 1-B |
| Spacetrack catalog number | 24797 | 20478 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:21 | 2021 Jan 17 13:22 |
| Time of closest approach (UTC) | 2020 Nov 29 10:13:41.304 |
| Minimum distance | 66.471 km |
| Height difference | 3.713 km |
| Relative speed | 9.763 km/s |
| Angle between velocity vectors | 83° |
| Geographic position | 80.0°S, 132.9°W |
| Height | 929 km |
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