TOI-1431 b

{{Short description|Exoplanet}}

{{Infobox planet

|name= TOI-1431 b

|discovery_method= Transit

|discovered= 2021

|discoverer= TESS, MASCARA

|semimajor= 0.046

|period= 2.7 d

|inclination= 80.4

|star= TOI-1431

|mean_radius= 1.49 {{Jupiter radius|link=y}}

|mass= 3.12 {{Jupiter mass|link=y}}

|density =

|single_temperature={{val|2,700|2,600}} K

|eccentricity=0

}}

TOI-1431 b, also known as MASCARA-5b, is an ultra-hot Jupiter exoplanet orbiting TOI-1431 in the constellation of Cepheus. It has an orbital period of 2.7 days.{{Cite web |title=Exoplanet-catalog |url=https://exoplanets.nasa.gov/exoplanet-catalog/8002/toi-1431-b/ |access-date=2023-09-05 |website=Exoplanet Exploration: Planets Beyond our Solar System |language=en}} Its dayside temperature is 2,700 K (2,427 °C), making it hotter than 40% of stars in our galaxy.{{cite news |title=Scientists uncover a 'hellish' planet so hot it could vaporize most metals |url=https://www.cnet.com/news/scientists-uncover-a-hellish-planet-so-hot-it-could-vaporize-most-metals/ |date=April 27, 2021 |work=CNET|accessdate=April 27, 2021 }} The nightside temperature is 2,600 K (2,300 °C).{{cite news |title='Hellish' new planet discovered |url=https://www.usq.edu.au/news/2021/04/hellish-new-planet |date=April 27, 2021 |work=University of Southern Queensland|accessdate=April 27, 2021 }}{{citation |display-authors=1 |arxiv=2104.12078|year=2021|title=TOI-1431b/MASCARA-5b: An Ultra-hot Jupiter Orbiting One of the Hottest & Brightest Known Exoplanet Host Stars|author1=Brett Christopher Addison|last2=Knudstrup|first2=Emil|last3=Wong|first3=Ian|last4=Hebrard|first4=Guillaume|last5=Dorval|first5=Patrick|last6=Snellen|first6=Ignas|last7=Albrecht|first7=Simon|last8=Bello-Arufe|first8=Aaron|last9=Almenara|first9=Jose-Manuel|last10=Boisse|first10=Isabelle|last11=Bonfils|first11=Xavier|last12=Dalal|first12=Shweta|last13=Demangeon|first13=Olivier|last14=Hoyer|first14=Sergio|last15=Kiefer|first15=Flavien|last16=Santos|first16=N. C.|last17=Nowak|first17=Grzegorz|last18=Luque|first18=Rafael|last19=Stangret|first19=Monika|last20=Palle|first20=Enric|last21=Tronsgaard|first21=Rene|last22=Antoci|first22=Victoria|last23=Buchhave|first23=Lars A.|last24=Gunther|first24=Maximilian N.|last25=Daylan|first25=Tansu|last26=Murgas|first26=Felipe|last27=Parviainen|first27=Hannu|last28=Esparza-Borges|first28=Emma|last29=Crouzet|first29=Nicolas|last30=Narita|first30=Norio|journal=Posters from the Tess Science Conference Ii (Tsc2|page=64|doi=10.5281/zenodo.5126266|bibcode=2021tsc2.confE..64A|s2cid=240578462 }}{{cite journal |mode=cs2 |display-authors=1|arxiv=2104.12414|year=2021|title=The obliquity and atmosphere of the ultra-hot Jupiter TOI-1431b (MASCARA-5b): A misaligned orbit and no signs of atomic or molecular absorptions|last1=Stangret|first1=M.|last2=Pallé|first2=E.|last3=Casasayas-Barris|first3=N.|last4=Oshagh|first4=M.|last5=Bello-Arufe|first5=A.|last6=Luque|first6=R.|last7=Nascimbeni|first7=V.|last8=Yan|first8=F.|last9=Orell-Miquel|first9=J.|last10=Sicilia|first10=D.|last11=Malavolta|first11=L.|last12=Addison|first12=B. C.|last13=Buchhave|first13=L. A.|last14=Bonomo|first14=A. S.|last15=Borsa|first15=F.|last16=Cabot|first16=S. H. C.|last17=Cecconi|first17=M.|last18=Fischer|first18=D. A.|last19=Harutyunyan|first19=A.|last20=Mendonça|first20=J. M.|last21=Nowak|first21=G.|last22=Parviainen|first22=H.|last23=Sozzetti|first23=A.|last24=Tronsgaard|first24=R.|journal=Astronomy & Astrophysics|volume=654|pages=A73|doi=10.1051/0004-6361/202040100|bibcode=2021A&A...654A..73S|s2cid=233393996}}