| Primary satellite | Secondary satellite |
| Name | Cosmos 1302 Rocket | IRIDIUM 138 |
| Spacetrack catalog number | 12792 | 43071 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 13:08 | 2024 Dec 22 20:13 |
| Time of closest approach (UTC) | 2024 Dec 25 21:59:31.809 |
| Minimum distance | 4.322 km |
| Height difference | 3.995 km |
| Relative speed | 14.689 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 18.3°N, 123.1°E |
| Height | 775 km |
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