| Primary satellite | Secondary satellite |
| Name | Cosmos 1125 Rocket | Iridium 914 |
| Spacetrack catalog number | 11511 | 24836 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 20 12:05 | 2021 Jan 19 18:05 |
| Time of closest approach (UTC) | 2020 Dec 05 06:50:13.656 |
| Minimum distance | 41.519 km |
| Height difference | 6.443 km |
| Relative speed | 2.460 km/s |
| Angle between velocity vectors | 19° |
| Geographic position | 48.2°N, 12.5°W |
| Height | 765 km |
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