WASP-55#Planetary system

{{Short description|Star in constellation of Virgo}}

{{Starbox begin

| name = WASP-55

}}

{{Starbox observe

| constell = Virgo{{cite constellation|WASP-55}}

| epoch = J2000

| ra = {{RA|13|35|01.9538}}

| dec = {{DEC|-17|30|12.526}}

| appmag_v = 11.75{{cite journal |bibcode=2000A&A...355L..27H |title=The Tycho-2 catalogue of the 2.5 million brightest stars |last1=Høg |first1=E. |last2=Fabricius |first2=C. |last3=Makarov |first3=V. V. |last4=Urban |first4=S. |last5=Corbin |first5=T. |last6=Wycoff |first6=G. |last7=Bastian |first7=U. |last8=Schwekendiek |first8=P. |last9=Wicenec |first9=A. |journal=Astronomy and Astrophysics |date=2000 |volume=355 }}

}}

{{Starbox character

| type=Main sequence

| class = G1{{cite journal |bibcode=2021A&A...654A.137L |title=The evolution of lithium in FGK dwarf stars. The lithium-rotation connection and the Li desert |last1=Llorente De Andrés |first1=F. |last2=Chavero |first2=C. |last3=de la Reza |first3=R. |last4=Roca-Fàbrega |first4=S. |last5=Cifuentes |first5=C. |journal=Astronomy and Astrophysics |date=2021 |volume=654 |doi=10.1051/0004-6361/202141339 |arxiv=2108.05852 }}

}}

{{Starbox astrometry

| radial_v = −4.09

| prop_mo_ra = +12.072

| prop_mo_dec = −3.837

| parallax = 3.3337

| p_error = 0.0438

| parallax_footnote = {{cite DR2|3603529272750802560|mode=cs2}}

}}

{{Starbox detail

| source = {{citation|arxiv=1711.06377|title=PLANET CANDIDATES FROM K2 CAMPAIGNS 5–8 AND FOLLOW-UP OPTICAL SPECTROSCOPY|year=2017|doi=10.3847/1538-3881/aa9b83|last1=Petigura|first1=Erik A.|last2=Crossfield|first2=Ian J. M.|last3=Isaacson|first3=Howard|last4=Beichman|first4=Charles A.|last5=Christiansen|first5=Jessie L.|last6=Dressing|first6=Courtney D.|last7=Fulton|first7=Benjamin J.|last8=Howard|first8=Andrew W.|last9=Kosiarek|first9=Molly R.|last10=Lépine|first10=Sébastien|last11=Schlieder|first11=Joshua E.|last12=Sinukoff|first12=Evan|last13=Yee|first13=Samuel W.|journal=The Astronomical Journal|volume=155|page=21|s2cid=55674757 |doi-access=free }}

| mass = {{val|1.04|0.05}}

| radius = {{val|1.11|0.13|0.09}}

| gravity = 4.34

| luminosity =

| temperature = 5,965

| metal_fe = 0.00

| rotation =

| rotational_velocity = 2.7

| age_gyr = {{val|1.1|0.8|0.6}}

}}

{{Starbox catalog

| names = {{odlist|TYC=6125-113-1|2MASS=J13350194-1730124|Gaia DR2=3603529272750802560|EPIC=212300977}}

}}

{{Starbox reference

| Simbad = WASP-55

}}

{{Starbox end}}

WASP-55 is a G-type main-sequence star about 980 light-years away. The star is much younger than the Sun at approximately {{val|1.1|0.8|0.6|u=billion years}}.{{citation|arxiv=1512.05549|title=High-precision photometry by telescope defocussing. VIII. WASP-22, WASP-41, WASP-42 and WASP-55|year=2015|doi=10.1093/mnras/stw279|last1=Southworth|first1=John|last2=Tregloan-Reed|first2=J.|last3=Andersen|first3=M. I.|last4=Calchi Novati|first4=S.|last5=Ciceri|first5=S.|last6=Colque|first6=J. P.|last7=D'Ago|first7=G.|last8=Dominik|first8=M.|last9=Evans|first9=D.|last10=Gu|first10=S. -H.|last11=Herrera-Cruces|first11=A.|last12=Hinse|first12=T. C.|last13=Jorgensen|first13=U. G.|last14=Juncher|first14=D.|last15=Kuffmeier|first15=M.|last16=Mancini|first16=L.|last17=Peixinho|first17=N.|last18=Popovas|first18=A.|last19=Rabus|first19=M.|last20=Skottfelt|first20=J.|last21=Tronsgaard|first21=R.|last22=Unda-Sanzana|first22=E.|last23=Wang|first23=X. -B.|last24=Wertz|first24=O.|last25=Alsubai|first25=K. A.|last26=Andersen|first26=J. M.|last27=Bozza|first27=V.|last28=Bramich|first28=D. M.|last29=Burgdorf|first29=M.|last30=Damerdji|first30=Y.|doi-access=free |display-authors=29}} WASP-55 is similar to the Sun in concentration of heavy elements.

A multiplicity survey in 2016 found one candidate stellar companion to WASP-55 at a projected separation of {{val|4.435|0.018|ul="}}.{{citation|arxiv=1603.03274|title=High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). I. Lucky imaging observations of 101 systems in the southern hemisphere|year=2016|doi=10.1051/0004-6361/201527970|last1=Evans|first1=D. F.|last2=Southworth|first2=J.|last3=Maxted|first3=P. F. L.|last4=Skottfelt|first4=J.|last5=Hundertmark|first5=M.|last6=Jørgensen|first6=U. G.|last7=Dominik|first7=M.|last8=Alsubai|first8=K. A.|last9=Andersen|first9=M. I.|last10=Bozza|first10=V.|last11=Bramich|first11=D. M.|last12=Burgdorf|first12=M. J.|last13=Ciceri|first13=S.|last14=d'Ago|first14=G.|last15=Figuera Jaimes|first15=R.|last16=Gu|first16=S.-H.|last17=Haugbølle|first17=T.|last18=Hinse|first18=T. C.|last19=Juncher|first19=D.|last20=Kains|first20=N.|last21=Kerins|first21=E.|last22=Korhonen|first22=H.|last23=Kuffmeier|first23=M.|last24=Mancini|first24=L.|last25=Peixinho|first25=N.|last26=Popovas|first26=A.|last27=Rabus|first27=M.|last28=Rahvar|first28=S.|last29=Schmidt|first29=R. W.|last30=Snodgrass|first30=C.|journal=Astronomy & Astrophysics|volume=589|pages=A58|bibcode=2016A&A...589A..58E|s2cid=14215845|display-authors=29}} Follow-up observations in 2017 were unable to confirm if the suspected companion red dwarf star, with a temperature of {{val|3340|90|fmt=commas|ul=K}}, is gravitationally bound to WASP-55 or not.{{citation|arxiv=1709.07476|title=High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016|year=2018|doi=10.1051/0004-6361/201731855|last1=Evans|first1=D. F.|last2=Southworth|first2=J.|last3=Smalley|first3=B.|last4=Jørgensen|first4=U. G.|last5=Dominik|first5=M.|last6=Andersen|first6=M. I.|last7=Bozza|first7=V.|last8=Bramich|first8=D. M.|last9=Burgdorf|first9=M. J.|last10=Ciceri|first10=S.|last11=d'Ago|first11=G.|last12=Figuera Jaimes|first12=R.|last13=Gu|first13=S.-H.|last14=Hinse|first14=T. C.|last15=Henning|first15=Th.|last16=Hundertmark|first16=M.|last17=Kains|first17=N.|last18=Kerins|first18=E.|last19=Korhonen|first19=H.|last20=Kokotanekova|first20=R.|last21=Kuffmeier|first21=M.|last22=Longa-Peña|first22=P.|last23=Mancini|first23=L.|last24=MacKenzie|first24=J.|last25=Popovas|first25=A.|last26=Rabus|first26=M.|last27=Rahvar|first27=S.|last28=Sajadian|first28=S.|last29=Snodgrass|first29=C.|last30=Skottfelt|first30=J.|journal=Astronomy & Astrophysics|volume=610|pages=A20|bibcode=2018A&A...610A..20E|s2cid=53400492|display-authors=29}}