Planet HAT-P-21 b

Detailed information about planet HAT-P-21 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HAT-P-21 b

Planet Status

Confirmed

Discovered in

2010

Publication Status

Published in a refereed paper

Update

2014-09-28

Mass

4.063 (\begin{matrix} + 0.161 \\ - 0.161 \end{matrix})

M_J 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Mass*sin(i)

—

Semi-Major Axis

0.0494 (\pm 0.0007)

AU 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Orbital Period

4.124461 (\pm 7e-06)

day 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Eccentricity

0.228 (\pm 0.016)

1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Angular distance

0.000194

arcsec

ω

300.0 (\pm 3.0)

deg 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

T_peri

—

Radius

1.024 (\begin{matrix} + 0.092 \\ - 0.092 \end{matrix})

R_J 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Inclination

87.2 (\pm 0.7)

deg 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Detection Method

Primary Transit

Mass Meas. Method

—

Radius Meas. Method

—

Primary transit

2454996.41312 (\pm 0.00069)

JD 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

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

11 Dec 2010: The time of secondary eclipse is not measured but derived from the Keplerian orbit (Bakos et al. 2010)

No link

Star

Name

HAT-P-21

Distance

254.0 (\pm 19.0)

pc 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Spectral type

G3

Apparent magnitude V

11.46

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.947 (\pm 0.042)

M_Sun 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Age

10.2 (\pm 2.5)

Gyr 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Effective temperature

5588.0 (\pm 80.0)

K 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Radius

1.105 (\pm 0.083)

R_Sun 1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Metallicity [Fe/H]

0.01 (\pm 0.08)

1 publication

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

11:25:06.0

Dec₂₀₀₀

+41:01:41.0

Alternate Names

No remarks

No link

Simbad
Most recent references (ADS)

Planet HAT-P-21 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

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 HAT-P-21 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

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

The GAPS Programme at TNG: XXXVI. Measurement of the Rossiter-McLaughlin effect and revising the physical and orbital parameters of the HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, HAT-P-29 eccentric planetary systems

Light Curve Analysis of Ground-Based Data from Exoplanets Transit Database

A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars

A Uniformly Derived Catalogue of Exoplanets from Radial Velocities

Factors Affecting the Radii of Close-in Transiting Exoplanets

Taxonomy of the extrasolar planet

The Reflection Effect in Interacting Binaries or in Planet-Star Systems

Quantization of Planetary Systems and its Dependency on Stellar Rotation

The Exoplanet Orbit Database

The Exoplanet Handbook

Planets from the HATNet project

Defining and cataloging exoplanets: The exoplanet.eu database

Prospecting transit duration variations in extrasolar planetary systems

HAT-P-20b-HAT-P-23b: four massive transiting extrasolar planets