WASP-58 is a binary star system in the constellation Lyra. It comprises a G-type main-sequence star and a red dwarf at a separation of 384 astronomical units. WASP-58 is slightly depleted in heavy elements, having 80% of the solar abundance of iron. The system is much older than the Sun at 12.80+0.20−2.10 billion years. Based on parallax measurements, it lies at a distance of 960 light-years (290 parsecs). Lithium was detected in the stellar spectrum of WASP-58A, making the star anomalous for its advanced age. A multiplicity survey in 2015 detected a red dwarf stellar companion at a projected separation of 1.281±0.002″ to WASP-58A, and it was confirmed to be gravitationally bound in 2016.
Planetary system In 2012 a transiting hot Jupiter planet, WASP-58b, was detected on a tight, circular orbit around the primary star WASP-58A. The planetary equilibrium temperature is 1270±80 K.
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