| Primary satellite | Secondary satellite |
| Name | CZ-2C R/B | IRIDIUM 33 DEB |
| Spacetrack catalog number | 37766 | 34898 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 04:35 | 2021 Jan 14 23:00 |
| Time of closest approach (UTC) | 2020 Dec 04 23:20:17.187 |
| Minimum distance | 7.697 km |
| Height difference | -3.811 km |
| Relative speed | 14.976 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 41.9°S, 139.8°E |
| Height | 700 km |
|