Planet KELT-21 b

Name KELT-21 b
Planet Status Confirmed
Discovered in 2017
Mass 3.91 ( -3.9 +0.0 ) MJ
Mass*sin(i)
Semi-Major Axis 0.05224 (± 0.00035) AU
Orbital Period 3.6127647 (± 3.3e-06) day
Eccentricity
ω
Tperi
Radius 1.586 ( -0.4 +0.4 ) RJ
Inclination 86.46 (± 0.38) deg
Update 2017-12-12
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit
Secondary transit
λ
Impact Parameter b 0.423 ( -0.039 +0.033 )
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

KELT-21
Name KELT-21
Distance 415.0 (± 50.0) pc
Spectral type A8V
Apparent magnitude V 10.5
Mass 1.458 (± 0.029) MSun
Age 1.6 (± 0.1) Gyr
Effective temperature 7598.0 (± 84.0) K
Radius 1.638 (± 0.034) RSun
Metallicity [Fe/H] -0.405 (± 0.033)
Detected Disc
Magnetic Field
RA2000 20:19:12.0
Dec2000 +32:34:52
Alternate Names
Planetary system 1 planet

More data


Related publications

KELT: The Kilodegree Extremely Little Telescope, a Survey for Exoplanets Transiting Bright, Hot Stars
2018 PEPPER J., STASSUN K. & GAUDI S.
in the 'Handbook of Exoplanets,' Springer
arxiv  

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System
2018 JOHNSON M., RODRIGUEZ J., ZHOU G., GONZALEZ E., CARGILE Ph. et al.
Astron. J., 155, 100
paper  arxiv