HD 191806 b

HD 191806 b is an exoplanet orbiting HD 191806, a K-type star. It has a minimum mass 8.52 times that of Jupiter. It does not orbit within the habitable zone.^[1] In 2022, the inclination and true mass of HD 191806 b were measured via astrometry.^[2]

HD 191806 b

Discovery
Discovered by	R. F. Díaz et al.[1]
Discovery site	Haute-Provence Observatory
Discovery date	April 26, 2016
Detection method	Transit method
Orbital characteristics[2]
Semi-major axis	2.749+0.106 −0.118 AU
Eccentricity	0.213+0.029 −0.028
Orbital period (sidereal)	4.390+0.027 −0.031 yr
Inclination	66.519°+5.830° −4.851°
Longitude of ascending node	160.537°+12.338° −12.970°
Time of periastron	2451758.874+43.595 −33.839
Argument of periastron	346.184°+5.623° −5.388°
Semi-amplitude	144.660+3.416 −2.931 m/s
Star	HD 191806
Physical characteristics[2]
Mass	9.334+0.919 −0.852 MJ