WASP-57#Planetary system

{{Starbox begin

| name = WASP-57

}}

{{Starbox observe

| epoch = J2000

| constell = Libra

| ra = {{RA|14|55|16.8229}}

| dec = {{DEC|-02|03|27.5991}}

| appmag_v = 13.04

}}

{{Starbox character

| type=Main sequence

| class = G6

}}

{{Starbox astrometry

| radial_v =-23.290

| prop_mo_ra =-27.064

| prop_mo_dec = -4.687

| parallax = 2.4826

| p_error = 0.0359

| parallax_footnote = {{cite DR2|6340377202215639936}}

}}

{{Starbox detail

| source = {{citation|arxiv=1704.00373|title=The GAPS Programme with HARPS-N at TNG|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=602|pages=A107|bibcode=2017A&A...602A.107B |s2cid=118923163|display-authors=1}}

| mass = 0.886{{±|0.061}}

| radius = 0.927{{±|0.031}}

| gravity = 4.452{{±|0.024}}{{citation|arxiv=1509.05609|title=Larger and faster: Revised properties and a shorter orbital period for the WASP-57 planetary system from a pro-am collaboration|year=2015|doi=10.1093/mnras/stv2183|last1=Southworth|first1=John|last2=Mancini|first2=L.|last3=Tregloan-Reed|first3=J.|last4=Calchi Novati|first4=S.|last5=Ciceri|first5=S.|last6=d'Ago|first6=G.|last7=Delrez|first7=L.|last8=Dominik|first8=M.|last9=Evans|first9=D. F.|last10=Gillon|first10=M.|last11=Jehin|first11=E.|last12=Jørgensen|first12=U. G.|last13=Haugbølle|first13=T.|last14=Lendl|first14=M.|last15=Arena|first15=C.|last16=Barbieri|first16=L.|last17=Barbieri|first17=M.|last18=Corfini|first18=G.|last19=Lopresti|first19=C.|last20=Marchini|first20=A.|last21=Marino|first21=G.|last22=Alsubai|first22=K. A.|last23=Bozza|first23=V.|last24=Bramich|first24=D. M.|last25=Jaimes|first25=R. Figuera|last26=Hinse|first26=T. C.|last27=Henning|first27=Th.|last28=Hundertmark|first28=M.|last29=Juncher|first29=D.|last30=Korhonen|first30=H.|journal=Monthly Notices of the Royal Astronomical Society|volume=454|issue=3|pages=3094–3107|doi-access=free |display-authors=1}}

| luminosity =

| temperature = 5600{{±|100}}

| metal_fe = -0.25{{±|0.1}}

| rotation = 12.7{{±|4.5}}

| rotational_velocity =3.7{{±|1.3}}

| age_gyr = 0.957{{±|0.518}}{{citation|arxiv=2006.07880|title=TATOO: Tidal-chronology standalone tool to estimate the age of massive close-in planetary systems|year=2020|doi=10.1051/0004-6361/202038058|last1=Gallet|first1=F.|author2=Gallet|journal=Astronomy & Astrophysics|volume=641|pages=A38|bibcode=2020A&A...641A..38G|s2cid=219687851}}

}}

{{Starbox catalog

| names = {{odlist|GSC=04991-00565|2MASS=J14551682-0203275|Gaia DR2=6340377202215639936}}

}}

{{Starbox reference

| Simbad = WASP-57

}}

WASP-57 is a single G-type main-sequence star about 1310 light-years away. WASP-57 is depleted in heavy elements, having 55% of the solar abundance of iron. WASP-57 is much younger than the Sun at 0.957{{±|0.518}} billion years.

A multiplicity survey in 2015 did not detect any stellar companions to WASP-57.{{citation|arxiv=1506.05456|title=A Lucky Imaging search for stellar sources near 74 transit hosts|year=2015|doi=10.1051/0004-6361/201526525|last1=Wöllert|first1=Maria|last2=Brandner|first2=Wolfgang|journal=Astronomy & Astrophysics|volume=579|pages=A129|bibcode=2015A&A...579A.129W|s2cid=118903879}}

Planetary system

In 2012 a transiting hot Jupiter planet b was detected on a tight, circular orbit around WASP-57.{{citation|arxiv=1210.2329|title=WASP-54b, WASP-56b, and WASP-57b: Three new sub-Jupiter mass planets from SuperWASP|year=2012|doi=10.1051/0004-6361/201220520|last1=Faedi|first1=F.|last2=Pollacco|first2=D.|last3=Barros|first3=S. C. C.|last4=Brown|first4=D.|last5=Collier Cameron|first5=A.|last6=Doyle|first6=A. P.|last7=Enoch|first7=R.|last8=Gillon|first8=M.|last9=Gómez Maqueo Chew|first9=Y.|last10=Hébrard|first10=G.|last11=Lendl|first11=M.|last12=Liebig|first12=C.|last13=Smalley|first13=B.|last14=Triaud|first14=A. H. M. J.|last15=West|first15=R. G.|last16=Wheatley|first16=P. J.|last17=Alsubai|first17=K. A.|last18=Anderson|first18=D. R.|last19=Armstrong|first19=D.|last20=Bento|first20=J.|last21=Bochinski|first21=J.|last22=Bouchy|first22=F.|last23=Busuttil|first23=R.|last24=Fossati|first24=L.|last25=Fumel|first25=A.|last26=Haswell|first26=C. A.|last27=Hellier|first27=C.|last28=Holmes|first28=S.|last29=Jehin|first29=E.|last30=Kolb|first30=U.|journal=Astronomy & Astrophysics|volume=551|pages=A73|bibcode=2013A&A...551A..73F |s2cid=14346225|display-authors=1}}

Planetary equilibrium temperature is {{val|1338|29|ul=K}}.

{{OrbitboxPlanet begin

| name = WASP-57

| table_ref =

}}

{{OrbitboxPlanet

| exoplanet = b

| mass = 0.643{{±|0.056|0.054}}

| radius = 1.050{{±|0.052}}

| semimajor = 0.03772{{±|0.00083|0.00089}}

| period = 2.83891856{{±|0.00000081}}

| eccentricity = <0.059