{{Short description|Star in the constellation Coma Berenices}} {{starbox begin}} {{starbox observe | epoch = J2000 | constell = [[Coma Berenices (constellation)|Coma Berenices]]<ref name="Roman1987"/> | ra = {{RA|12|13|27.8908}}<ref name=GaiaDR3/> | dec = {{DEC|+23|03|20.428}}<ref name=GaiaDR3/> | appmag_v = 11.48<ref name=TYC2>{{cite journal|title=The Tycho-2 catalogue of the 2.5 million brightest stars|author=Høg, E.|display-authors=etal|date=2000|journal=Astronomy and Astrophysics|volume=355|pages=L27–L30|bibcode=2000A&A...355L..27H}}</ref> }} {{Starbox character | type = [[main sequence]]<ref name=Faedi/> | class = G6V<ref name=Faedi/> }} {{Starbox astrometry | radial_v = {{val|5.97|0.80}}<ref name=GaiaDR3/> | prop_mo_ra = {{val|−36.695}} | prop_mo_dec = {{val|2.954}} | pm_footnote = <ref name=GaiaDR3/> | parallax = 3.0471 | p_error = 0.0162 | parallax_footnote = <ref name=GaiaDR3/> | absmag_v = }} {{Starbox detail | source = <ref name=Faedi>{{cite journal|bibcode=2013A&A...551A..73F|doi=10.1051/0004-6361/201220520|arxiv=1210.2329|title=WASP-54b, WASP-56b, and WASP-57b: Three new sub-Jupiter mass planets from SuperWASP|journal=Astronomy & Astrophysics|volume=551|pages=A73|year=2013|last1=Faedi|first1=F.|s2cid=14346225|display-authors=etal}}</ref> | mass = 1.107{{±|0.024}}<ref name=Bonomo2017/> | radius = 1.112{{±|0.026|0.022}}<ref name=Bonomo2017/> | temperature = 5600 ± 100 | gravity = 4.45 ± 0.1 | metal_fe =0.12{{±|0.06}}<ref name=Bonomo2017/> | rotational_velocity = 1.5 ± 0.9 | age_gyr = 6.2{{±|3.0|2.1}}<ref name=Bonomo2017/> }} {{Starbox catalog | names = {{odlist | name=Melotte 111 AV 561 | 2MASS=J12132790+2303205 | TIC=347329162 | TOI=1809 | TYC=1986-1561-1 | WASP=56}}<ref name=SIMBAD/> }} {{Starbox reference | Simbad = WASP-56 | NSTED = WASP-56 }} {{Starbox end}}
'''WASP-56''' is a [[sun-like star]] of [[spectral type]] G6 about 1,070 [[light-year]]s away in the constellation of [[Coma Berenices]].<ref name=boundary>{{Cite journal | title=Coma Berenices, constellation boundary | journal=The Constellations | publisher=[[International Astronomical Union]] | url=http://www.iau.org/public/constellations/#com | access-date=27 February 2014 | archive-date=4 June 2013 | archive-url=https://web.archive.org/web/20130604014156/http://www.iau.org/public/constellations/#com | url-status=dead }}</ref> It has an [[apparent magnitude]] of 11.48. Observations at the [[Calar Alto Observatory]] using the [[lucky imaging]] technique detected a candidate companion star located 3.4 [[Minute and second of arc|arcseconds]] away, however it was not known if this is an actual binary companion or an [[optical double]].<ref name="Wöllert2015"/> It was confirmed in 2019 using [[Gaia DR2]] data.<ref name="Mugrauer2019"/>
==Planetary system== It has a [[exoplanet|planet]] that was discovered by [[transit photometry]] in 2011 by the [[SuperWASP]] program. Fourteen transits were observed over three watching seasons, each lasting 214 minutes and reducing the stars' brightness by 14 millimagnitudes.<ref name=Faedi/> The planet has around 0.6 times the mass of [[Jupiter]] and an orbital period of 4.6 days. The planet possibly has a large core of heavy metals.<ref name=Faedi/> {{OrbitboxPlanet begin | table_ref = <ref name=Bonomo2017>{{cite journal|arxiv=1704.00373|title=The GAPS Programme with HARPS-N@TNG XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets|year=2017|doi=10.1051/0004-6361/201629882|last1=Bonomo|first1=A. S.|last2=Desidera|first2=S.|last3=Benatti|first3=S.|last4=Borsa|first4=F.|last5=Crespi|first5=S.|last6=Damasso|first6=M.|last7=Lanza|first7=A. F.|last8=Sozzetti|first8=A.|last9=Lodato|first9=G.|last10=Marzari|first10=F.|last11=Boccato|first11=C.|last12=Claudi|first12=R. U.|last13=Cosentino|first13=R.|last14=Covino|first14=E.|last15=Gratton|first15=R.|last16=Maggio|first16=A.|last17=Micela|first17=G.|last18=Molinari|first18=E.|last19=Pagano|first19=I.|last20=Piotto|first20=G.|last21=Poretti|first21=E.|last22=Smareglia|first22=R.|last23=Affer|first23=L.|last24=Biazzo|first24=K.|last25=Bignamini|first25=A.|last26=Esposito|first26=M.|last27=Giacobbe|first27=P.|last28=Hébrard|first28=G.|last29=Malavolta|first29=L.|last30=Maldonado|first30=J.|journal=Astronomy & Astrophysics|volume=A107|page=602|bibcode=2017A&A...602A.107B|s2cid=118923163|display-authors=29}}</ref> }} {{OrbitboxPlanet | exoplanet = b | mass = 0.599{{±|0.040|0.039}} | period = 4.6171010{{±|0.000003}} | semimajor = 0.05614{{±|0.00040|0.00041}} | eccentricity = <0.082 | inclination = {{val|88.5|0.1|0.2}} | radius = 1.092{{±|0.035|0.033}} }} {{Orbitbox end}}
==References== <references> <ref name=SIMBAD>{{cite simbad|title=Cl* Melotte 111 AV 561|access-date=9 September 2013}}</ref>
<ref name=GaiaDR3>{{Cite Gaia DR3|4001613814138156416}}</ref>
<ref name="Roman1987">{{Cite constellation|WASP-56}}</ref>
<ref name="Wöllert2015">{{cite journal | title=A Lucky Imaging search for stellar sources near 74 transit hosts | url=https://www.aanda.org/articles/aa/full_html/2015/07/aa26525-15/aa26525-15.html | last1=Wöllert | first1=Maria | last2=Brandner | first2=Wolfgang | journal=Astronomy and Astrophysics | volume=579 | at=A129 | year=2015 | arxiv=1506.05456 | bibcode=2015A&A...579A.129W | doi=10.1051/0004-6361/201526525 | s2cid=118903879 }}</ref>
<ref name="Mugrauer2019">{{cite journal |last1=Mugrauer |first1=M. |date=December 2019 |title=Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release |journal=[[Monthly Notices of the Royal Astronomical Society]] |volume=490 |issue=4 |pages=5088–5102 |doi=10.1093/mnras/stz2673 |doi-access=free |bibcode=2019MNRAS.490.5088M}}</ref> </references>
{{Stars of Coma Berenices}}
[[Category:Coma Berenices]] [[Category:G-type main-sequence stars]] [[Category:Solar analogs]] [[Category:Planetary systems with one confirmed planet]] [[Category:Planetary transit variables]] [[Category:Binary stars]] [[Category:TESS Objects of Interest|1809]] [[Category:Wide Angle Search for Planets|56]] {{main-star-stub}}