| Primary satellite | Secondary satellite |
| Name | Cosmos 1666 | GAOFEN 11 |
| Spacetrack catalog number | 15889 | 43585 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Feb 01 06:47 | 2023 Feb 01 19:57 |
| Time of closest approach (UTC) | 2022 Dec 06 17:16:05.096 |
| Minimum distance | 5935.407 km |
| Height difference | -5.864 km |
| Relative speed | 14.508 km/s |
| Angle between velocity vectors | 145° |
| Geographic position | 39.3°S, 19.9°E |
| Height | 509 km |
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