HD 171238 b
Orbiting HD 171238
HD 171238 b is an exoplanet orbiting the star HD 171238, discovered in 2009 using the Radial Velocity method.
Mass
2796.89
Earth masses
Orbital Period
1515.0
days
Distance
44.8
parsecs
Radius (Earth radii)
Unknown
Mass (Earth masses)
2796.89
Measured
Equilibrium Temperature
Unknown
Parameter source: Li et al. 2021
Orbital Period
1515.000+16.000−17.000days
Semi-Major Axis
2.5180+0.0320−0.0330au
Planet Mass (Earth masses)
2796.89+1144.18−413.18
Planet Mass (Jupiter masses)
8.8000+3.6000−1.3000
Eccentricity
0.3580+0.0280−0.0260
Epoch of Periastron
2455905.00+20.00−20.00days(JD)
Argument of Periastron
46.9+3.9−3.7deg
Distance from Earth
44.8 pc (~146 ly)
Spectral Type
G8 V
Temperature
Unknown
Mass (Solar)
0.92 M☉
Radius (Solar)
Unknown
Luminosity
-0.20 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
278.6818°, -28.0728°
Discovery Method
Radial Velocity
Discovery Year
2009
Source ID: HD 171238 b
HD 171238 b orbits HD 171238 and was reported in 2009 and was detected with the Radial Velocity method.
Published measurements list a mass of 2,796.89 Earth masses and an orbital period of 1,515 days.
Catalog data places the system at about 44.8 parsecs from Earth, a host star classified as G8 V, and 1 known planet in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HD 171238