TOI-1452 b

TOI-1452 b is a confirmed super-Earth exoplanet, possibly a water world, orbiting a red-dwarf star TOI-1452 about 100 light-years away in the Draco constellation.^[2][3] The exoplanet is about 70% larger in diameter than Earth, and roughly five times as massive.^[4]

TOI-1452 b

Discovery
Discovered by	Cadieux, Charles et al.; International Team[1]
Discovery site	Université de Montréal[1]
Discovery date	June 2022[1]
Orbital characteristics
Semi-major axis	0.061±0.003 AU
Eccentricity	0
Orbital period (sidereal)	11 days
Inclination	89.77°±0.16°
Argument of perihelion	90
Star	TOI-1452
Physical characteristics[1]
Mean radius	1.67±0.07 R🜨
Mass	4.82±1.3 M🜨
Mean density	5.6+1.8 −1.6 g/cm3
Temperature	326±7 K 52.85±7 C

System

The TOI-1452 star system is 99 light-years away from Earth,^[5] located in the constellation of Draco. It is a binary pair of dim red dwarf stars separated by only 96 astronomical units (AU). A notable feature of this system is the presence of an exoplanet around one of the stars, designated as TOI-1452 b.^[6] It is two M4 dwarf stars that were observed by TESS as a priority, since they are on the cool dwarf list, a list of high-priority orange-red and red dwarf stars, that was uploaded to TESS. It is a flare star, with a flare observed by TESS where the star brightened by 5%. The secondary star is often distinguished from the first with the name "TOI-1760".^[7]

Artist's impression and size comparison of TOI-1452b and Earth

Discovery

TOI-1452 b was discovered by an international team led by astronomers from the Université de Montréal,^[8][9] using data from NASA’s Transiting Exoplanet Survey Satellite (TESS).^[1][10] The discovery was first reported in June 2022.^[1]