| Primary satellite | Secondary satellite |
| Name | IRIDIUM 138 | Cosmos 1302 Rocket |
| Spacetrack catalog number | 43071 | 12792 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:13 | 2024 Dec 23 04:09 |
| Time of closest approach (UTC) | 2024 Dec 25 21:59:31.739 |
| Minimum distance | 4.256 km |
| Height difference | -3.974 km |
| Relative speed | 14.689 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 18.3°N, 123.1°E |
| Height | 779 km |
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