| Primary satellite | Secondary satellite |
| Name | Cosmos 923 Rocket | Iridium 26 |
| Spacetrack catalog number | 10121 | 24903 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Jul 12 12:37 | 2025 Jul 12 11:02 |
| Time of closest approach (UTC) | 2025 Jun 16 22:16:31.817 |
| Minimum distance | 11.734 km |
| Height difference | 4.620 km |
| Relative speed | 7.439 km/s |
| Angle between velocity vectors | 60° |
| Geographic position | 73.3°N, 39.3°E |
| Height | 775 km |
|