Planet HD 221420 b

Name HD 221420 b
Planet Status Confirmed
Discovered in 2019
Mass
Mass*sin(i) 9.7 (± 1.1) MJ
Semi-Major Axis
Orbital Period 22482.0 (± 4200.0) day
Eccentricity 0.42 (± 0.07)
ω 164.4 ( -6.3 +6.9 ) deg
Tperi
Radius
Inclination
Update 2019-05-02
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 54.7 ( -3.6 +4.2 ) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

HD 221420
Name HD 221420
Distance 31.8 pc
Spectral type G2IV-V
Apparent magnitude V 5.8
Mass 1.67 (± 0.11) MSun
Age
Effective temperature 5830.0 K
Radius
Metallicity [Fe/H] 0.29
Detected Disc
Magnetic Field
RA2000 23:33:20.0
Dec2000 -77:23:07
Alternate Names
Planetary system 1 planet

More data


Related publications

True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry
2021 VENNER A., VANDERBURG A. & PEARCE L.
Astron. J., 162, 12
paper   arxiv

Precise Masses and Orbits for Nine Radial Velocity Exoplanets
2021 LI Y., BRANDT T., BRANDT M., DUPUY T., MICHALIK D. et al.
Astron. J., 162, 266
paper   arxiv

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques
2019 KANE S., DALBA P., LI Zh., HORCH E., HIRSCH L. et al.
Astron. J., 157, 252
paper  arxiv