HD 221420 b
Orbiting HD 221420
HD 221420 b is an exoplanet orbiting the star HD 221420, discovered in 2019 using the Radial Velocity method.
Mass
7278.27
Earth masses
Orbital Period
10090.0
days
Distance
31.1
parsecs
Radius (Earth radii)
Unknown
Mass (Earth masses)
7278.27
Measured
Equilibrium Temperature
Unknown
Parameter source: Venner et al. 2021
Orbital Period
10090.000+890.000−560.000days
Semi-Major Axis
10.1500+0.5900−0.3800au
Planet Mass (Earth masses)
7278.27+699.22−699.22
Planet Mass (Jupiter masses)
22.9000+2.2000−2.2000
Eccentricity
0.1400+0.0400−0.0300
Epoch of Periastron
2456440.00+230.00−260.00days(JD)
Argument of Periastron
211.0+10.0−11.0deg
Radial Velocity Semi-Amplitude
48.50+2.50−1.90m/s
Distance from Earth
31.1 pc (~102 ly)
Spectral Type
G2 IV-V
Temperature
5847 K
Mass (Solar)
1.35 M☉
Radius (Solar)
1.95 R☉
Luminosity
0.60 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
353.3319°, -77.3853°
Discovery Method
Radial Velocity
Discovery Year
2019
Source ID: HD 221420 b
HD 221420 b orbits HD 221420 and was reported in 2019 and was detected with the Radial Velocity method.
Published measurements list a mass of 7,278.27 Earth masses and an orbital period of 10,090 days.
Catalog data places the system at about 31.1 parsecs from Earth, a host star classified as G2 IV-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 221420