HD 203030

HD 203030 is a single orange (K-type) main-sequence, located approximately 128 light-years away in the constellation of Vulpecula, taking its primary name from its Henry Draper Catalogue designation.
History and nomenclature.
The designation HD 203030 is from the Henry Draper Catalogue, which is based on spectral classifications made between 1911 and 1915 by Annie Jump Cannon and her co-workers, and was published between 1918 and 1924.
Characteristics.
HD 203030 is a Sun-like K-type main-sequence star. It is likely very young, belonging to 45 million years old IC 2391 open cluster.
Planetary system.
In 2006, a direct imaging have discovered what was believed to be a brown dwarf of spectral class L7.5 at the projected separation 487.1 AU. The companion was proven to be in the bound orbit by 2014. In 2017, the planetary system reanalysis have indicated what the star HD 203030 is probably very young, and therefore both the primary and the observed companion is less massive than previously thought, placing the companion object within planetary definition. In 2019, the rotational period of HD 203030 B was measured to be equal to 7.5 hours, and patchy cloud cover was detected.