| Primary satellite | Secondary satellite |
| Name | IRIDIUM 138 | DMSP B5D1-2 |
| Spacetrack catalog number | 43071 | 10033 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:13 | 2024 Dec 23 01:26 |
| Time of closest approach (UTC) | 2024 Dec 27 13:02:49.648 |
| Minimum distance | 4.027 km |
| Height difference | -1.862 km |
| Relative speed | 14.905 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 44.9°N, 70.2°E |
| Height | 784 km |
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