| Primary satellite | Secondary satellite |
| Name | Sich 1 Rocket | IRIDIUM 33 DEB |
| Spacetrack catalog number | 23659 | 46436 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:12 | 2021 Jan 17 16:40 |
| Time of closest approach (UTC) | 2020 Dec 07 03:41:12.197 |
| Minimum distance | 52.900 km |
| Height difference | 3.675 km |
| Relative speed | 14.952 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 41.7°N, 110.4°W |
| Height | 642 km |
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