CVSO 30
CVSO 30 is a binary T Tauri star, located in constellation Orion at 1200 light years from Earth away with two candidate planets. Both candidate planets are gas giants. It is the first star around which potential planets have been found both by the transit method and by direct imaging.
CVSO 30 b is calculated to have a period of 10.76 hours and CVSO 30 c a period of 27,000 years. Would it exist, the CVSO 30 b would be a hot Jupiter planet orbiting the T Tauri star, with 6.2 Jupiter masses.
Direct imaging of suspected CVSO 30 c, with calculated mass equal to 4.7 Jupiter's, has been achieved through photometric and spectroscopic high contrast observations carried out with the Very Large Telescope located in Chile, the Keck Observatory in Hawaii and the Calar Alto Observatory in Spain. However, the colors of the object suggest that it may actually be a background star, such as a K-type giant or a M-type subdwarf.
By 2020, phase of "dips" caused by suspected planet CVSO 30 b, have drifted nearly 180 degrees from expected value, thus ruling out the existence of planet. Instead, the rare type of stellar starspot activity with very large starspots is now suspected. Also, the CVSO 30 is suspected to be a stellar binary, with the previously reported planetary orbital period equal to the rotation period of companion star.
