HATS-3#Planetary system
{{Short description|Star in the constellation Cetus}}
{{Starbox begin
|name=HATS-3
}}
{{Starbox observe
| epoch = J2000
| constell = Capricornus
| dec = {{DEC|-24|25|43.5378}}
}}
{{Starbox character
| type = main sequence
}}
{{Starbox astrometry
| radial_v = {{val|-22.07|0.83}}
| prop_mo_ra = 10.393
| prop_mo_dec = 15.478
| parallax = 2.3595
| p_error = 0.0171
}}
{{Starbox detail
| radius = {{val|1.400|0.030}}
| temperature = {{val|6351|76}}
| metal_fe = {{val|−0.157|0.070}}
| rotation =
| rotational_velocity = {{val|9.1|1.3}}
| age_gyr = {{val|3.20|0.60|0.40}}
}}
{{Starbox catalog
| names = HATS-3, {{odlist | 2MASS = J20494978-2425436 | GSC = 06926-00454 | TIC = 336732616 | TOI = 103 | TYC = 6926-454-1}}
}}
{{Starbox reference
| Simbad = HATS-3
}}
{{Starbox end}}
HATS-3 is an F-type main-sequence star {{convert|1380|ly|pc|lk=on|abbr=off}} away. Its surface temperature is 6351{{±|76}} K. HATS-3 is relatively depleted in its concentration of heavy elements, with a metallicity Fe/H index of −0.157{{±|0.07}}, but is slightly younger than the Sun at an age of 3.2{{±|0.6|0.4}} billion years.
A multiplicity survey in 2016 detected a candidate stellar companion to HATS-3, 3.671{{±|0.016}} arc-seconds away.
Planetary system
In 2013, one planet, named HATS-3b, was discovered on a tight, nearly circular orbit. The planetary orbit of HATS-3b is likely aligned with the equatorial plane of the star, at a misalignment angle of 3{{±|25}}°. The planetary equilibrium temperature is 1643 K.
{{OrbitboxPlanet begin
| name = HATS-3
}}
{{OrbitboxPlanet
| exoplanet = b
| mass = {{val|1.10|0.18|0.19}}
| radius = {{val|1.381|0.035}}
| semimajor = {{val|0.04852|0.00053|0.00054}}
| period = {{val|3.5478510|(50)}}
| eccentricity = <0.30
| inclination = {{val|86.20|0.30}}
}}
{{Orbitbox end}}
References
{{Reflist|refs=
{{cite simbad|title=HATS-3|access-date=2021-02-09}}
{{Cite Gaia DR3|6805886373600546176}}
{{cite journal |last1=Bonomo |first1=A. S. |last2=Desidera |first2=S. |display-authors=etal |date=June 2017 |title=The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets |journal=Astronomy & Astrophysics |volume=602 |issue= |pages=A107 |doi=10.1051/0004-6361/201629882 |arxiv=1704.00373 |bibcode=2017A&A...602A.107B}}
}}
{{Sky|20|49|49.7853|-|24|25|43.5398}}
{{Capricornus}}
{{DEFAULTSORT:HATS-3}}
Category:Planetary transit variables
Category:F-type main-sequence stars