Planet KELT-21 b

Detailed information about planet KELT-21 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

KELT-21 b

Planet Status

Confirmed

Discovered in

2017

Publication Status

Published in a refereed paper

Update

2017-12-12

Mass

3.91 (\begin{matrix} + 0.0 \\ - 3.9 \end{matrix})

M_J

Mass*sin(i)

—

Semi-Major Axis

0.05224 (\pm 0.00035)

Orbital Period

3.6127647 (\pm 3.3e-06)

day

Eccentricity

—

Angular distance

—

ω

—

T_peri

—

Radius

1.586 (\begin{matrix} + 0.4 \\ - 0.4 \end{matrix})

R_J

Inclination

86.46 (\pm 0.38)

deg

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

0.423 (\begin{matrix} + 0.033 \\ - 0.039 \end{matrix})

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

No remarks

No link

Star

Name

KELT-21

Distance

415.0 (\pm 50.0)

pc 1 publication

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System

Spectral type

A8V

Apparent magnitude V

10.5

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.458 (\pm 0.029)

M_Sun 1 publication

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System

Age

1.6 (\pm 0.1)

Gyr 1 publication

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System

Effective temperature

7598.0 (\pm 84.0)

K 1 publication

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System

Radius

1.638 (\pm 0.034)

R_Sun 1 publication

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System

Metallicity [Fe/H]

-0.405 (\pm 0.033)

1 publication

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

20:19:12.0

Dec₂₀₀₀

+32:34:52.0

Alternate Names

No remarks

No link

Simbad
Most recent references (ADS)

Planet KELT-21 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 KELT-21 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

High-resolution transmission spectroscopy study of ultra-hot Jupiters HAT-P-57b, KELT-17b, KELT-21b, KELT-7b, MASCARA-1b, and WASP-189b

Significant Transit Timing Offsets of 31 Hot Jupiters

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System

KELT: The Kilodegree Extremely Little Telescope, a Survey for Exoplanets Transiting Bright, Hot Stars