| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | IRIDIUM 123 |
| Spacetrack catalog number | 12203 | 42804 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:24 | 2024 Dec 23 03:46 |
| Time of closest approach (UTC) | 2024 Dec 26 02:27:47.349 |
| Minimum distance | 3.834 km |
| Height difference | 1.949 km |
| Relative speed | 14.490 km/s |
| Angle between velocity vectors | 152° |
| Geographic position | 77.8°N, 103.4°E |
| Height | 788 km |
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