| Primary satellite | Secondary satellite |
| Name | NOAA 11 | Cosmos 1066 Rocket |
| Spacetrack catalog number | 19531 | 11166 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 May 13 11:59 | 2025 May 13 12:21 |
| Time of closest approach (UTC) | 2025 Apr 29 16:49:16.247 |
| Minimum distance | 0.799 km |
| Height difference | 0.634 km |
| Relative speed | 14.781 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 81.3°S, 42.2°E |
| Height | 874 km |
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