More methane than would be predicted by conventional models of the atmosphere of «hot Jupiters» has been detected in planet b's atmosphere (more). (solstation.com)
However, the presence of planet b at its orbital distance of nearly 0.5 AU may have disrupted the development of an Earth - type planet in the water zone. (solstation.com)
In 2006, astronomers discovered a very dim («mid-range»), red dwarf companion to HD 189733 A of spectral and luminosity type M V. Observed at a separation of 216 AUs from Star A, the companion star has a clockwise orbit that is nearly perpendicular to the orbital plane of transiting planet b around Star A (HD 189733 b or Ab). (solstation.com)