HD 9446 b
Orbiting HD 9446
HD 9446 b is an exoplanet orbiting the star HD 9446, discovered in 2009 using the Radial Velocity method.
Minimum Mass (M sin i)
222.47
Earth masses
Orbital Period
30.1
days
Distance
50.4
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
222.47
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Hebrard et al. 2010
Orbital Period
30.052+0.027−0.027days
Semi-Major Axis
0.1890+0.0060−0.0060au
M sin(i) (Earth masses)
222.47+19.07−19.07
M sin(i) (Jupiter masses)
0.7000+0.0600−0.0600
Eccentricity
0.2000+0.0600−0.0600
Epoch of Periastron
2454854.40+2.00−2.00days
Argument of Periastron
215.0+30.0−30.0deg
Radial Velocity Semi-Amplitude
46.60+3.00−3.00m/s
Distance from Earth
50.4 pc (~164 ly)
Spectral Type
G5 V
Temperature
5793 K
Mass (Solar)
1.00 M☉
Radius (Solar)
1.00 R☉
Luminosity
0.04 log L☉
Planets in System
2
Stars in System
1
Coordinates (RA, Dec)
23.3350°, 29.2649°
Discovery Method
Radial Velocity
Discovery Year
2009
Source ID: HD 9446 b
HD 9446 b orbits HD 9446 and was reported in 2009 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 222.47 Earth masses (M sin i) and an orbital period of 30.05 days.
Catalog data places the system at about 50.4 parsecs from Earth, a host star classified as G5 V, and 2 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HD 9446More planets in this system