TOI-1431 b

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.^[1] Its dayside temperature is 2,700 K (2,427 °C), making it hotter than 40% of stars in our galaxy.^[2] The nightside temperature is 2,600 K (2,300 °C).^[3][4][5]

TOI-1431 b

Discovery
Discovered by	TESS, MASCARA
Discovery date	2021
Detection method	Transit
Orbital characteristics
Semi-major axis	0.046
Eccentricity	0
Orbital period (sidereal)	2.7 d
Inclination	80.4
Star	TOI-1431
Physical characteristics
Mean radius	1.49 RJ
Mass	3.12 MJ
Temperature	2700±2600 K