Planet HD 221420 b

Detailed information about planet HD 221420 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HD 221420 b

Planet Status

Confirmed

Discovered in

2019

Publication Status

—

Update

2023-07-12

Mass

22.9 (\pm 2.2)

M_J 1 publication

True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry

Mass*sin(i)

— 1 publication

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Semi-Major Axis

10.15 AU 1 publication

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Orbital Period

10088.0 (\begin{matrix} + 895.0 \\ - 562.0 \end{matrix})

day 2 publications

True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry
Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Eccentricity

0.14 (\pm 0.04)

2 publications

True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry
Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Angular distance

—

ω

211.0 (\pm 11.0)

deg 2 publications

True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry
Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

T_peri

2456440.0 JD 1 publication

True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry

Radius

—

Inclination

16.0 (\begin{matrix} + 2.5 \\ - 1.8 \end{matrix})

deg 1 publication

True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry

Detection Method

Radial Velocity

Mass Meas. Method

Astrometry

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

54.7 (\begin{matrix} + 4.2 \\ - 3.6 \end{matrix})

m/s 1 publication

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

—

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

No remarks

No link

Star

Name

HD 221420

Distance

31.8 pc 1 publication

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Spectral type

G2IV-V

Apparent magnitude V

5.8

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.67 (\pm 0.11)

M_Sun 1 publication

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Age

—

Effective temperature

5830.0 K 1 publication

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Radius

—

Metallicity [Fe/H]

0.29 1 publication

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

23:33:20.0

Dec₂₀₀₀

-77:23:07.0

Alternate Names

—

No remarks

No link

Simbad
Most recent references (ADS)

Planet HD 221420 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Planet HD 221420 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Related publications

True masses of the long-period companions to HD 92987 and HD 221420 from Hipparcos-Gaia astrometry

Precise Masses and Orbits for Nine Radial-velocity Exoplanets

Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques