GSC 03949-00967#Planetary system
{{Short description|Star in the constellation Cygnus}}
{{Starbox begin
| name = GSC 03949-00967
}}
{{Starbox observe
| constell = Cygnus
| epoch = J2000
}}
{{Starbox character
| type = main sequence
| appmag_3_passband = J
| appmag_3 = {{val|12.111|0.027}}
| appmag_4_passband = H
| appmag_4 = {{val|11.673|0.023}}
| appmag_5_passband = K
| appmag_5 = {{val|11.591|0.019}}
}}
{{Starbox astrometry
| radial_v = {{val|-13.88|1.41}}
| prop_mo_ra = {{val|9.198|(14)}}
| prop_mo_dec = {{val|30.739|(13)}}
| parallax = 2.7654
| p_error = 0.0115
}}
{{Starbox detail
| mass = 0.901{{±|0.029}}
| radius = 0.851{{±|0.014|0.013}}
| gravity = 4.517{{±|0.012}}
| luminosity =
| temperature = 5171{{±|36}}
| metal_fe = 0.20{{±|0.8}}
| rotation =
| rotational_velocity = 3.80{{±|0.36}}
| age_gyr = 7.38{{±|1.87}}
}}
{{Starbox catalog
| names = {{odlist | name=TrES-5 Parent Star | GSC=03949-00967 | 2MASS=J20205324+5926556 | TIC=233948455 | TOI=3612}}
}}
{{Starbox reference
| Simbad = GSC+03949-00967
| NSTED = TrES-5
}}
{{Starbox end}}
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 (TrES). 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 {{val|1480|24|ul=K}}.
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.
{{OrbitboxPlanet begin
}}
{{OrbitboxPlanet
| exoplanet = b
| mass = 1.784{{±|0.066}}
| radius = 1.209{{±|0.021}}
| semimajor = 0.02447{{±|0.00021}}
| period = 1.482247063{{±|0.0000005}}
| eccentricity = 0.017{{±|0.012}}
| inclination = 84.529{{±|0.005}}
}}
{{Orbitbox end}}
References
{{Reflist|refs=
{{cite simbad | title=GSC 03949-00967 | access-date=2022-01-06}}
{{Cite Gaia DR3|2188601779406152448}}
{{cite constellation|GSC 03949-00967}}
{{cite Exoplanet Archive |TrES-5 |access-date=11 March 2025}}
}}
{{Sky|20|20|53.2484|+|59|26|55.5745}}
{{Cygnus (constellation)}}
Category:Cygnus (constellation)
Category:G-type main-sequence stars
Category:Planetary systems with one confirmed planet