| Primary satellite | Secondary satellite |
| Name | Iridium Sim1 | Cosmos 1025 Rocket |
| Spacetrack catalog number | 24925 | 10974 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 03:46 | 2024 Dec 23 05:21 |
| Time of closest approach (UTC) | 2024 Dec 24 22:07:32.203 |
| Minimum distance | 4.273 km |
| Height difference | 4.273 km |
| Relative speed | 13.667 km/s |
| Angle between velocity vectors | 129° |
| Geographic position | 76.7°N, 165.7°E |
| Height | 616 km |
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