| Primary satellite | Secondary satellite |
| Name | IRIDIUM 33 DEB | ASTEX 1 |
| Spacetrack catalog number | 34690 | 5560 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:35 | 2024 Dec 23 11:53 |
| Time of closest approach (UTC) | 2024 Dec 26 11:45:25.712 |
| Minimum distance | 2.919 km |
| Height difference | -1.976 km |
| Relative speed | 15.004 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 39.3°N, 79.6°W |
| Height | 722 km |
|