WASP-55 is a G-type main-sequence star about 954 light-years away in the constellation Virgo. The star is much younger than the Sun at approximately 1.1+0.8−0.6 billion years. WASP-55 is similar to the Sun in concentration of heavy elements. A multiplicity survey in 2016 found one candidate stellar companion to WASP-55 at a projected separation of 4.435″±0.018″. Follow-up observations in 2017 were unable to confirm if the suspected companion red dwarf star, with a temperature of 3,340±90 K, is gravitationally bound to WASP-55 or not. It was confirmed in 2019 using Gaia DR2 data.
Planetary system In 2012 a transiting hot Jupiter planet, WASP-55b, was detected on a tight, circular orbit. Its equilibrium temperature is 1,305 K.
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