An
orbital revolution around its parent star (which is 1/3 the mass of the Sun) or "year", would take approximately 163,000 years located in the
constellation of
Pisces, 155
light-years from the
Solar System, and estimated to have a mass nine to thirteen times that of
Jupiter, and a surface temperature of 1000
K. It is a relatively young stellar system, part of the
AB Doradus moving group of ca. 30 main stars created from the same
molecular cloud less than 100 million years ago, and the only one found among the 90 stars of the group examined. The spectral type was initially determined to be T3.5 ±1. This team also found that it is a weak binary candidate. This object was found to be variable. First a study with the
Canada-France-Hawaii Telescope found a rotation period of around 6 hours and an amplitude of 4 ±1% on 2014 October 11. On two other occasions this object was not variable. Later the variability was studied with
Hubble Space Telescope WFC3 at 1.1-1.67 μm. GU Psc b showed variability with an amplitude of 2.7% and a rotation period of around 8 hours. The largely gray light curve modulation show that this object has heterogeneous clouds. ==Discovery==