| Primary satellite | Secondary satellite |
| Name | Iridium 4 Rocket | Geosat FO |
| Spacetrack catalog number | 24797 | 25157 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:21 | 2021 Jan 17 09:07 |
| Time of closest approach (UTC) | 2020 Dec 02 18:36:07.769 |
| Minimum distance | 17.297 km |
| Height difference | -5.444 km |
| Relative speed | 14.988 km/s |
| Angle between velocity vectors | 164° |
| Geographic position | 19.5°N, 99.8°W |
| Height | 626 km |
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