HAT-P-30#Planetary system
{{Starbox begin}}
{{Starbox observe
| epoch = J2000
| constell = Hydra
}}
{{Starbox character
| type=main sequence
}}
{{Starbox astrometry
| parallax = 4.8037
| p_error = 0.0099
| parallax_footnote = {{cite Gaia DR3|3096441729861716224}}
}}
{{Starbox detail
| temperature = 6,252{{±|100}}
| metal_fe = −0.079{{±|0.079}}
| rotation =
| rotational_velocity = 3.6{{±|0.4}}
}}
{{Starbox catalog
| names = {{odlist|BD=+06 1909|GSC=00208-00722|2MASS=J08154797+0550121|TOI=490|WASP=51}}
}}
{{Starbox reference
| Simbad = HAT-P-30
}}
{{Starbox end}}
HAT-P-30, also known as WASP-51, is the primary of a binary star system about 700 light-years away. It is a G-type main-sequence star. HAT-P-30 has a similar concentration of heavy elements compared to the Sun.
The faint stellar companion was detected in 2013 at a projected separation of 3.842{{±|0.007}}″.
Planetary system
In 2011 a transiting hot Jupiter planet b was independently detected by two teams.
The planetary orbit is strongly misaligned with the equatorial plane of the star, the misalignment angle being equal to 73.5{{±|9.0}}°.
Since 2022, an additional planet in the system is suspected based on transit timing variations.
{{OrbitboxPlanet begin
}}
{{OrbitboxPlanet
| exoplanet = b
| mass = 0.723{{±|0.023}}
| radius = 1.426{{±|0.020}}
| semimajor = 0.04114{{±|0.00030}}
| period = 2.8106006{{±|0.0000004}}
| eccentricity = 0
| inclination = 82.56{{±|0.08}}
}}
{{Orbitbox end}}
References
{{Reflist|refs=
{{cite Gaia DR3|3096441729861716224}}
{{cite simbad |title=BD+06 1909 |mode=cs2 }}
{{citation |bibcode=2013A&A...559A..71G |doi=10.1051/0004-6361/201322274 |title=The multiplicity status of three exoplanet host stars |author1=Ginski, C. |author2=Mugrauer, M. |author3=Seeliger, M. |author4=Löhne, T. |journal=Astronomy & Astrophysics |volume=559 |pages=6 |date=November 2013 |doi-access=free }}
{{Cite constellation|HAT-P-30}}
}}
{{Sky|08|15|47.9805|+|05|50|12.3521}}
{{Hydra (constellation)}}
Category:Hydra (constellation)
Category:G-type main-sequence stars
Category:Planetary systems with one confirmed planet