HD 217107 b
Orbiting HD 217107
HD 217107 b is an exoplanet orbiting the star HD 217107, discovered in 1998 using the Radial Velocity method.
Mass
459.58
Earth masses
Orbital Period
7.1
days
Distance
20.1
parsecs
Radius (Earth radii)
Unknown
Mass (Earth masses)
459.58
Measured
Equilibrium Temperature
Unknown
Parameter source: Giovinazzi et al. 2025
Orbital Period
7.127+0.000−0.000days
Semi-Major Axis
0.0736+0.0004−0.0005au
Planet Mass (Earth masses)
459.58+57.21−21.29
Planet Mass (Jupiter masses)
1.4460+0.1800−0.0670
Eccentricity
0.1284+0.0015−0.0014
Epoch of Periastron
2455201.11+0.01−0.01days(JD)
Argument of Periastron
22.8+0.7−0.7deg
Distance from Earth
20.1 pc (~65 ly)
Spectral Type
G
Temperature
Unknown
Mass (Solar)
1.04 M☉
Radius (Solar)
1.22 R☉
Luminosity
Unknown
Planets in System
2
Stars in System
1
Coordinates (RA, Dec)
344.5647°, -2.3954°
Discovery Method
Radial Velocity
Discovery Year
1998
Source ID: HD 217107 b
HD 217107 b orbits HD 217107 and was reported in 1998 and was detected with the Radial Velocity method.
Published measurements list a mass of 459.58 Earth masses and an orbital period of 7.13 days.
Catalog data places the system at about 20.1 parsecs from Earth, a host star classified as G, 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 217107More planets in this system