TOI-628 b

TOI-628 b is an exoplanet whose mass is 6.33 times that of Jupiter.^[1] It has an orbital period of 3.4 days and was discovered by TESS in January 2021. The planet is classified as hot Jupiter, having a equilibrium temperature of 1,586 K (1,313 °C), and a radius 6% larger than that of Jupiter.^[1] It is located 583 light years away from Earth.^[3][4]

TOI-628 b

Discovery
Discovered by	Transiting Exoplanet Survey Satellite
Discovery date	January 2021
Detection method	Transit
Designations
Alternative names	HD 288842 b[1]
Orbital characteristics[1]
Semi-major axis	0.0486+0.0008 −0.0009 AU
Eccentricity	0.07±0.02
Orbital period (sidereal)	3.41 days
Inclination	88.41+1.00 −0.93[2]
Star	TOI-628 (HD 288842)
Physical characteristics[1]
Mean radius	1.06+0.06 −0.03 RJ
Mass	6.3±0.3 MJ
Mean density	6.58+0.70 −0.75 g/cm3[2]
Temperature	1586+52 −40 K

The host star of TOI-628 b is TOI-628, also known as HD 28842, a G-type star^[5] located in the constellation Monoceros.^[a] It is 1.35 times larger than the Sun, 1.31 times more massive, and has an effective temperature of 6,250 K (5,980 °C).^[2] The star has a visual apparent magnitude of 10.112, being not visible to the naked eye.^[2] It is moving away from the Sun, with a radial velocity of 20.07 km/s.^[2]