| Primary satellite | Secondary satellite |
| Name | IRIDIUM 136 | Cosmos 1125 |
| Spacetrack catalog number | 42962 | 11510 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 03:05 | 2024 Dec 22 16:20 |
| Time of closest approach (UTC) | 2024 Dec 29 15:43:04.349 |
| Minimum distance | 2.638 km |
| Height difference | -1.451 km |
| Relative speed | 14.692 km/s |
| Angle between velocity vectors | 160° |
| Geographic position | 14.0°S, 95.1°E |
| Height | 785 km |
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