| Primary satellite | Secondary satellite |
| Name | DMSP 5D-2 F13 DEB | IRIDIUM 181 |
| Spacetrack catalog number | 40491 | 56726 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 13:22 | 2024 Dec 22 20:32 |
| Time of closest approach (UTC) | 2024 Dec 28 13:20:19.254 |
| Minimum distance | 3.318 km |
| Height difference | 2.472 km |
| Relative speed | 12.766 km/s |
| Angle between velocity vectors | 117° |
| Geographic position | 81.4°N, 4.8°E |
| Height | 756 km |
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