| Primary satellite | Secondary satellite |
| Name | Cosmos 1538 Rocket | Iridium 920 |
| Spacetrack catalog number | 14760 | 24871 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:37 | 2024 Dec 23 04:07 |
| Time of closest approach (UTC) | 2024 Dec 26 18:02:56.558 |
| Minimum distance | 4.060 km |
| Height difference | 0.306 km |
| Relative speed | 14.683 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 25.3°S, 102.1°E |
| Height | 764 km |
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