# WASP-56

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Star in the constellation Coma Berenices

WASP-56 Observation data Epoch J2000 Equinox J2000 Constellation Coma Berenices[1] Right ascension 12h 13m 27.8908s[2] Declination +23° 03′ 20.428″[2] Apparent magnitude (V) 11.48[3] Characteristics Evolutionary stage main sequence[4] Spectral type G6V[4] Astrometry Radial velocity (Rv) 5.97±0.80[2] km/s Proper motion (μ) RA: −36.695 mas/yr[2] Dec.: 2.954 mas/yr[2] Parallax (π) 3.0471±0.0162 mas[2] Distance 1,070 ± 6 ly (328 ± 2 pc) Details[4] Mass 1.107±0.024[5] M☉ Radius 1.112+0.026 −0.022[5] R☉ Surface gravity (log g) 4.45 ± 0.1 cgs Temperature 5600 ± 100 K Metallicity [Fe/H] 0.12±0.06[5] dex Rotational velocity (v sin i) 1.5 ± 0.9 km/s Age 6.2+3.0 −2.1[5] Gyr Other designations Melotte 111 AV 561, TOI-1809, TIC 347329162, WASP-56, TYC 1986-1561-1, 2MASS J12132790+2303205[6] Database references SIMBAD data Exoplanet Archive data

**WASP-56** is a [sun-like star](/source/Sun-like_star) of [spectral type](/source/Spectral_type) G6 about 1,070 [light-years](/source/Light-year) away in the constellation of [Coma Berenices](/source/Coma_Berenices).[7] It has an [apparent magnitude](/source/Apparent_magnitude) of 11.48. Observations at the [Calar Alto Observatory](/source/Calar_Alto_Observatory) using the [lucky imaging](/source/Lucky_imaging) technique detected a candidate companion star located 3.4 [arcseconds](/source/Minute_and_second_of_arc) away, however it was not known if this is an actual binary companion or an [optical double](/source/Optical_double).[8] It was confirmed in 2019 using [Gaia DR2](/source/Gaia_DR2) data.[9]

## Planetary system

It has a [planet](/source/Exoplanet) that was discovered by [transit photometry](/source/Transit_photometry) in 2011 by the [SuperWASP](/source/SuperWASP) program. Fourteen transits were observed over three watching seasons, each lasting 214 minutes and reducing the stars' brightness by 14 millimagnitudes.[4] The planet has around 0.6 times the mass of [Jupiter](/source/Jupiter) and an orbital period of 4.6 days. The planet possibly has a large core of heavy metals.[4]

The WASP-56 planetary system[5] Companion (in order from star) Mass Semimajor axis (AU) Orbital period (days) Eccentricity Inclination (°) Radius b 0.599+0.040 −0.039 MJ 0.05614+0.00040 −0.00041 4.6171010±0.000003 <0.082 88.5+0.1 −0.2 1.092+0.035 −0.033 RJ

## References

1. **[^](#cite_ref-Roman1987_1-0)** [Roman, Nancy G.](/source/Nancy_Roman) (1987). ["Identification of a constellation from a position"](https://doi.org/10.1086%2F132034). *[Publications of the Astronomical Society of the Pacific](/source/Publications_of_the_Astronomical_Society_of_the_Pacific)*. **99** (617): 695. [Bibcode](/source/Bibcode_(identifier)):[1987PASP...99..695R](https://ui.adsabs.harvard.edu/abs/1987PASP...99..695R). [doi](/source/Doi_(identifier)):[10.1086/132034](https://doi.org/10.1086%2F132034). [Constellation record for this object](https://vizier.cds.unistra.fr/viz-bin/VizieR-4?source=VI%2F42%2Fout&%2F%2Ftables=VI%2F42%2Fout&-c=WASP-56&-c.eq=J2000&-c.r=++2&-c.u=arcmin&-c.geom=r&-source=&-source=VI%2F42%2Fout&-out=RA1875&-out=DE1875&-out=Cst) at [VizieR](/source/VizieR).

1. ^ [***a***](#cite_ref-GaiaDR3_2-0) [***b***](#cite_ref-GaiaDR3_2-1) [***c***](#cite_ref-GaiaDR3_2-2) [***d***](#cite_ref-GaiaDR3_2-3) [***e***](#cite_ref-GaiaDR3_2-4) Vallenari, A.; et al. (Gaia collaboration) (2023). ["*Gaia* Data Release 3. Summary of the content and survey properties"](https://doi.org/10.1051%2F0004-6361%2F202243940). *Astronomy and Astrophysics*. **674**: A1. [arXiv](/source/ArXiv_(identifier)):[2208.00211](https://arxiv.org/abs/2208.00211). [Bibcode](/source/Bibcode_(identifier)):[2023A&A...674A...1G](https://ui.adsabs.harvard.edu/abs/2023A&A...674A...1G). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/202243940](https://doi.org/10.1051%2F0004-6361%2F202243940). [S2CID](/source/S2CID_(identifier)) [244398875](https://api.semanticscholar.org/CorpusID:244398875). [Gaia DR3 record for this source](https://vizier.cds.unistra.fr/viz-bin/VizieR-4?-source=+I%2F355&-from=nav&-nav=cat%3AI%2F355%26tab%3A%7BI%2F355%2Fgaiadr3%7D%26key%3Asource%3D1355%2Fgaiadr3%26HTTPPRM%3A%26-out.add%3D.%26Source%3D%3D%3D4001613814138156416%26-go+%25%23Sesame%23%25%26) at [VizieR](/source/VizieR).

1. **[^](#cite_ref-TYC2_3-0)** Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". *Astronomy and Astrophysics*. **355**: L27–L30. [Bibcode](/source/Bibcode_(identifier)):[2000A&A...355L..27H](https://ui.adsabs.harvard.edu/abs/2000A&A...355L..27H).

1. ^ [***a***](#cite_ref-Faedi_4-0) [***b***](#cite_ref-Faedi_4-1) [***c***](#cite_ref-Faedi_4-2) [***d***](#cite_ref-Faedi_4-3) [***e***](#cite_ref-Faedi_4-4) Faedi, F.; et al. (2013). "WASP-54b, WASP-56b, and WASP-57b: Three new sub-Jupiter mass planets from SuperWASP". *Astronomy & Astrophysics*. **551**: A73. [arXiv](/source/ArXiv_(identifier)):[1210.2329](https://arxiv.org/abs/1210.2329). [Bibcode](/source/Bibcode_(identifier)):[2013A&A...551A..73F](https://ui.adsabs.harvard.edu/abs/2013A&A...551A..73F). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201220520](https://doi.org/10.1051%2F0004-6361%2F201220520). [S2CID](/source/S2CID_(identifier)) [14346225](https://api.semanticscholar.org/CorpusID:14346225).

1. ^ [***a***](#cite_ref-Bonomo2017_5-0) [***b***](#cite_ref-Bonomo2017_5-1) [***c***](#cite_ref-Bonomo2017_5-2) [***d***](#cite_ref-Bonomo2017_5-3) [***e***](#cite_ref-Bonomo2017_5-4) Bonomo, A. S.; Desidera, S.; Benatti, S.; Borsa, F.; Crespi, S.; Damasso, M.; Lanza, A. F.; Sozzetti, A.; Lodato, G.; Marzari, F.; Boccato, C.; Claudi, R. U.; Cosentino, R.; Covino, E.; Gratton, R.; Maggio, A.; Micela, G.; Molinari, E.; Pagano, I.; Piotto, G.; Poretti, E.; Smareglia, R.; Affer, L.; Biazzo, K.; Bignamini, A.; Esposito, M.; Giacobbe, P.; Hébrard, G.; Malavolta, L.; et al. (2017). "The GAPS Programme with HARPS-N@TNG XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". *Astronomy & Astrophysics*. **A107**: 602. [arXiv](/source/ArXiv_(identifier)):[1704.00373](https://arxiv.org/abs/1704.00373). [Bibcode](/source/Bibcode_(identifier)):[2017A&A...602A.107B](https://ui.adsabs.harvard.edu/abs/2017A&A...602A.107B). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201629882](https://doi.org/10.1051%2F0004-6361%2F201629882). [S2CID](/source/S2CID_(identifier)) [118923163](https://api.semanticscholar.org/CorpusID:118923163).

1. **[^](#cite_ref-SIMBAD_6-0)** ["Cl* Melotte 111 AV 561"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Cl%2A+Melotte+111+AV+561). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 9 September 2013.

1. **[^](#cite_ref-boundary_7-0)** ["Coma Berenices, constellation boundary"](https://web.archive.org/web/20130604014156/http://www.iau.org/public/constellations/#com). *The Constellations*. [International Astronomical Union](/source/International_Astronomical_Union). Archived from [the original](http://www.iau.org/public/constellations/#com) on 4 June 2013. Retrieved 27 February 2014.

1. **[^](#cite_ref-Wöllert2015_8-0)** Wöllert, Maria; Brandner, Wolfgang (2015). ["A Lucky Imaging search for stellar sources near 74 transit hosts"](https://www.aanda.org/articles/aa/full_html/2015/07/aa26525-15/aa26525-15.html). *Astronomy and Astrophysics*. **579**. A129. [arXiv](/source/ArXiv_(identifier)):[1506.05456](https://arxiv.org/abs/1506.05456). [Bibcode](/source/Bibcode_(identifier)):[2015A&A...579A.129W](https://ui.adsabs.harvard.edu/abs/2015A&A...579A.129W). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201526525](https://doi.org/10.1051%2F0004-6361%2F201526525). [S2CID](/source/S2CID_(identifier)) [118903879](https://api.semanticscholar.org/CorpusID:118903879).

1. **[^](#cite_ref-Mugrauer2019_9-0)** Mugrauer, M. (December 2019). ["Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release"](https://doi.org/10.1093%2Fmnras%2Fstz2673). *[Monthly Notices of the Royal Astronomical Society](/source/Monthly_Notices_of_the_Royal_Astronomical_Society)*. **490** (4): 5088–5102. [Bibcode](/source/Bibcode_(identifier)):[2019MNRAS.490.5088M](https://ui.adsabs.harvard.edu/abs/2019MNRAS.490.5088M). [doi](/source/Doi_(identifier)):[10.1093/mnras/stz2673](https://doi.org/10.1093%2Fmnras%2Fstz2673).

v t e Constellation of Coma Berenices List of stars in Coma Berenices Coma Berenices in Chinese astronomy Stars Bayer α (Diadem) β γ Flamsteed 7 11 12 13 14 16 17 21 23 (Phyllon Kissinou) 24 31 35 36 37 41 Variable FK GP IN LW HR 4668 HD 107146 108863 108874 110067 114762 b 115404 116029 Other 2MASS J12195156+3128497 KELT-6 WASP-56 WISE 1217+1626 Exoplanets HD 108874 b c KELT-6b Star clusters Coma Star Cluster Messier 53 NGC 4147 NGC 5053 Nebulae LoTr 5 Galaxies Messier 64 (Black Eye Galaxy) 85 88 91 98 99 100 NGC 4014 4015 4017 4053 4056 4060 4061 4065 4066 4070 4072 4074 4076 4084 4086 4089 4090 4091 4092 4093 4095 4098 4136 4146 4150 4162 4185 4189 4203 4211 4212 4213 4222 4237 4245 4253 4262 4274 4278 4293 4298 4302 4308 4310 4312 4314 4323 4328 4340 4359 4375 4383 4393 4394 4414 4419 4448 4450 4455 4459 4468 4473 4474 4475 4477 4479 4489 4494 4495 4498 4502 4506 4515 4516 4523 4525 4540 4555 4556 4558 4559 4561 4565 4571 4585 4595 4611 4614 4615 4633 4634 4651 4659 4670 4673 4676 (Mice Galaxies) 4689 4692 4710 4712 4725 4747 4839 4848 4860 4869 4871 4872 4873 4874 4875 4876 4881 4883 4886 4889 4892 4895 4907 4911 4919 4921 4944 5000 5004 5012 5032 5056 5172 Other 3C 275.1 3C 287 Arp 60 Coma Berenices Dragonfly 44 IC 755 (NGC 4019) IC 831 IC 860 IC 3505 IC 3528 IC 4040 IC 4051 IOK-1 IRAS F12032+1707 LEDA 83677 M85-HCC1 Malin 1 PGC 44691 PKS 1155+251 PKS 1222+216 VIRGOHI21 ZwCl 1305.4+2941 BCG Galaxy clusters Abell 1413 Coma I Coma Cluster Coma Supercluster M94 Group NGC 4065 Group NGC 4631 Group Astronomical events GRB 050509B iPTF14atg SN 1940B SN 1979C SN 2005ap SN 2006X SN 2020oi Category

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Adapted from the Wikipedia article [WASP-56](https://en.wikipedia.org/wiki/WASP-56) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/WASP-56?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.