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.

Nomenclature

The designation GSC 03949-00967 comes from the Guide Star Catalog.
The star is sometimes called TrES-5, in reference to its planet discovered by the Trans-Atlantic Exoplanet Survey. The discovery paper and the SIMBAD database use this designation for the planet itself, but other sources call the star TrES-5 and the planet TrES-5b, following the standard exoplanet naming convention.

Planetary system

In 2011, a transiting hot Jupiter planet, TrES-5b, was detected by the Trans-Atlantic Exoplanet Survey. The host star was one of the faintest stars to host a planetary companion detected by the transit method at the time of discovery. The planet’s equilibrium temperature is.
An additional planet on a 4-day orbit in the system was suspected since 2018 based on transit-timing variations, but refuted in 2021. A different object on a wide orbit, either star or planet, is still suspected.