| Primary satellite | Secondary satellite |
| Name | deb Delta | IRIDIUM 129 |
| Spacetrack catalog number | 19365 | 42958 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 11:48 | 2024 Dec 22 18:06 |
| Time of closest approach (UTC) | 2024 Dec 25 11:48:01.226 |
| Minimum distance | 4.137 km |
| Height difference | 2.777 km |
| Relative speed | 11.168 km/s |
| Angle between velocity vectors | 97° |
| Geographic position | 81.9°N, 4.9°E |
| Height | 787 km |
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