GSC 03949-00967
GSC 03949-00967 is a G-type main-sequence star about 1179 light-years away in the constellation Cygnus. It is older than the Sun, yet is enriched in heavy elements compared to the Sun, having 160% of the solar abundance. It hosts one known exoplanet, TrES-5b.[6] NomenclatureThe designation GSC 03949-00967 comes from the Guide Star Catalog. The star is sometimes called TrES-5,[9] in reference to its planet discovered by the Trans-Atlantic Exoplanet Survey (TrES). The discovery paper[6] and the SIMBAD database[8] use this designation for the planet itself, but other sources call the star TrES-5 and the planet TrES-5b,[7][10] following the standard exoplanet naming convention. Planetary systemIn 2011, a transiting hot Jupiter planet, TrES-5b, was detected by the Trans-Atlantic Exoplanet Survey.[6] The host star was one of the faintest stars to host a planetary companion detected by the transit method at the time of discovery.[4] The planet’s equilibrium temperature is 1480±24 K.[7] An additional planet on a 4-day orbit in the system was suspected since 2018 based on transit-timing variations,[10] but refuted in 2021. A different object on a wide orbit, either star or planet, is still suspected.[3]
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