KELT-6b

KELT-6b

KELT-6b (white) compared to Jupiter
Discovery[1]
Discovered by	Collins et al.
Discovery site	KELTNorth
Discovery date	2014
Detection method	Transit
Orbital characteristics
Semi-major axis	0.0804±0.0014 AU[2]
Eccentricity	0.22±0.11[3]
Orbital period (sidereal)	7.8457±0.0002 d[3]
Inclination	88.81°±0.85°[3]
Time of perihelion	2,456,269.2+1.7 −2.5 JD[1]
Argument of perihelion	308°+30° −272°[4]
Semi-amplitude	42.8±4.3 km/s[3]
Star	KELT-6
Physical characteristics
Mean radius	1.30±0.09 RJ[3]
Mass	0.442±0.019 MJ[4]
Mean density	0.333+0.120 −0.079 g/cm3[2](0.012+0.004 −0.002 lb/cu in)
Temperature	1313+59 −38 K[1]

KELT-6b is an exoplanet orbiting the F-type subgiant KELT-6 approximately 791 light years away in the northern constellation Coma Berenices. It was discovered in 2013 using the transit method, and was announced in 2014.

In 2014, the planet's parameters were observed. The paper states that KELT-6 has just entered the subgiant phase, and is no longer on the main sequence. In 2015, an additional planet, c, was discovered using the radial velocity method.^[4]

KELT-6b is a hot Saturn with 44.2% Jupiter's mass, but has been bloated to 1.3 times Jupiter's radius. Its density is half of Saturn's, and it has an equilibrium temperature of 1,313 K, but a hotter dayside temperature of 1,531 K.^[5]