| Primary satellite | Secondary satellite |
| Name | Cosmos 923 Rocket | IRIDIUM 141 |
| Spacetrack catalog number | 10121 | 43077 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Jul 12 12:37 | 2025 Jul 13 04:43 |
| Time of closest approach (UTC) | 2025 Jun 22 21:07:55.180 |
| Minimum distance | 25.827 km |
| Height difference | 3.567 km |
| Relative speed | 6.041 km/s |
| Angle between velocity vectors | 48° |
| Geographic position | 71.5°S, 127.1°W |
| Height | 802 km |
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