Planet Kepler-18 b

Detailed information about planet Kepler-18 b and its parameters.

Planet parameters Publications Observability Predictor Exo3D

Planet

Name

Kepler-18 b

Mass

0.022 (\pm 0.011)

M_J 1 publication

Understanding the Mass-Radius Relation for Sub-Neptunes: Radius as a Proxy for Composition

Mass*sin(i)

—

Semi-Major Axis

0.0447 (\pm 0.0006)

AU 1 publication

Kepler 18-b, c, and d: A System Of Three Planets Confirmed by Transit Timing Variations, Lightcurve Validation, Spitzer Photometry and Radial Velocity Measurements

Orbital Period

3.504725 (\pm 2.8e-05)

day 1 publication

Kepler 18-b, c, and d: A System Of Three Planets Confirmed by Transit Timing Variations, Lightcurve Validation, Spitzer Photometry and Radial Velocity Measurements

Eccentricity

0.0

1 publication

Kepler-18b, c, and d: A System of Three Planets Confirmed by Transit Timing Variations, Light Curve Validation, Warm-Spitzer Photometry, and Radial Velocity Measurements

ω

—

T_peri

—

Radius

0.178 (\pm 0.009)

R_J 2 publications

Understanding the Mass-Radius Relation for Sub-Neptunes: Radius as a Proxy for Composition
Kepler 18-b, c, and d: A System Of Three Planets Confirmed by Transit Timing Variations, Lightcurve Validation, Spitzer Photometry and Radial Velocity Measurements

Inclination

84.92 (\pm 0.26)

deg 1 publication

Kepler 18-b, c, and d: A System Of Three Planets Confirmed by Transit Timing Variations, Lightcurve Validation, Spitzer Photometry and Radial Velocity Measurements

Primary transit

2454966.5068 (\pm 0.0021)

JD 1 publication

Kepler 18-b, c, and d: A System Of Three Planets Confirmed by Transit Timing Variations, Lightcurve Validation, Spitzer Photometry and Radial Velocity Measurements

Secondary transit

—

λ

—

Impact Parameter b

0.771 (\begin{matrix} + 0.025 \\ - 0.025 \end{matrix})

1 publication

Kepler-18b, c, and d: A System of Three Planets Confirmed by Transit Timing Variations, Light Curve Validation, Warm-Spitzer Photometry, and Radial Velocity Measurements

Time V_r=0

—

Velocity Semiamplitude K

5.2 (\begin{matrix} + 2.4 \\ - 2.4 \end{matrix})

m/s 1 publication

Kepler-18b, c, and d: A System of Three Planets Confirmed by Transit Timing Variations, Light Curve Validation, Warm-Spitzer Photometry, and Radial Velocity Measurements

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Surface gravity log(g/g_H)

—

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

Kepler-18

Distance

438.51 (\begin{matrix} + 3.24 \\ - 3.24 \end{matrix})

Spectral type

—

Apparent magnitude V

14.0

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.97 (\begin{matrix} + 0.04 \\ - 0.04 \end{matrix})

M_Sun

Age

10.0 (\pm 2.3)

Gyr 1 publication

Kepler 18-b, c, and d: A System Of Three Planets Confirmed by Transit Timing Variations, Lightcurve Validation, Spitzer Photometry and Radial Velocity Measurements

Effective temperature

5345.0 (\begin{matrix} + 100.0 \\ - 100.0 \end{matrix})

Radius

1.11 (\begin{matrix} + 0.05 \\ - 0.05 \end{matrix})

R_Sun

Metallicity [Fe/H]

0.19 (\begin{matrix} + 0.06 \\ - 0.06 \end{matrix})

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

19:52:19.1

Dec₂₀₀₀

+44:44:46.8

Alternate Names

2MASS J19521906+4444467, GSC 03149-02089, KIC 8644288, KOI-137, WISE J195219.06+444446.6

Alias 2MASS J19521906+4444467

No link

Simbad
Most recent references (ADS)

Planet Kepler-18 b

Planet

Basic informations 20 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 3 planets

Remarks Some remarks

Other web pages No page

More data 2 references

Planet Kepler-18 b

Planet

Basic informations 20 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 3 planets

Remarks Some remarks

Other web pages No page

More data 2 references

Related publications

A 3D picture of moist-convection inhibition in hydrogen-rich atmospheres: Implications for K2-18 b

TESS Observations of Kepler Systems with Transit Timing Variations

Revisiting the Kepler field with TESS: Improved ephemerides using TESS 2min data

The Planetary Mass-Radius Relation and its Dependence on Orbital Period as Measured by Transit Timing Variations and Radial Velocities

The destruction of inner planetary systems during high-eccentricity migration of gas giants

Understanding the Mass-Radius Relation for Sub-Neptunes: Radius as a Proxy for Composition

Inside-Out Planet Formation

The Effect of Temperature Evolution on the Interior Structure of H2O-rich Planets

Dynamics of Rotation of Super-Earths

Theoretical Spectra of Terrestrial Exoplanet Surfaces

A Correlation Between the Eclipse Depths of Kepler Gas Giant Candidates and the Metallicities of their Parent Stars

A Uniformly Derived Catalogue of Exoplanets from Radial Velocities

Extracting Planet Mass and Eccentricity From TTV data

An Efficient Automated Validation Procedure for Exoplanet Transit Candidates

Kepler-18b, c, and d: A System of Three Planets Confirmed by Transit Timing Variations, Light Curve Validation, Warm-Spitzer Photometry, and Radial Velocity Measurements

The Exoplanet Handbook

Kepler 18-b, c, and d: A System Of Three Planets Confirmed by Transit Timing Variations, Lightcurve Validation, Spitzer Photometry and Radial Velocity Measurements