| Primary satellite | Secondary satellite |
| Name | Ariane Rocket | IRIDIUM 33 DEB |
| Spacetrack catalog number | 23561 | 33773 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 17 18:36 | 2021 Jan 18 03:44 |
| Time of closest approach (UTC) | 2020 Dec 07 13:54:01.578 |
| Minimum distance | 20.032 km |
| Height difference | -2.789 km |
| Relative speed | 10.438 km/s |
| Angle between velocity vectors | 89° |
| Geographic position | 80.5°N, 15.7°W |
| Height | 774 km |
|