Planet KELT-20 b

Name KELT-20 b
Planet Status Confirmed
Discovered in 2017
Mass 3.518 ( -3.517 +0.0 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0542 ( -0.0021 +0.0014 ) AU
Orbital Period 3.4741085 (± 1.9e-07) JD
Eccentricity
ω
Tperi
Radius 1.735 ( -0.075 +0.07 ) RJ
Inclination 86.2 (± 0.1) deg
Update 2017-07-11
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Molecules
Primary transit
Secondary transit
λ 3.4 (± 2.1) deg
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 2230.0 ( -70.0 +60.0 ) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names HD 185603 b, MASCARA-2 b

Star

HD 185603
Name HD 185603
Distance
Spectral type A2V
Apparent magnitude V 7.58
Mass 2.0 ( -0.1 +0.2 ) MSun
Age 0.3 ( -0.1 +0.2 ) Gyr
Effective temperature 8981.0 (± 115.0) K
Radius 1.561 ( -0.064 +0.058 ) RSun
Metallicity [Fe/H] -0.29 ( -0.36 +0.22 )
Detected Disc
Magnetic Field
RA2000 19:38:38.7
Dec2000 +31:13:09
Alternate Names KELT-20, SAO 68614, 2MASS J19383872+3113091
Planetary system 1 planet

More data

Observability Predictor

Remarks

5-7-2017 : This object is simultaneously annouced as MASCARA-2 b by Talens et al. and as KELT-20 b by Lund et al.

Related publications

MASCARA-2 b: A hot Jupiter transiting a mV=7.6 A-star
2017 TALENS G., JUSTESEN A., ALBRECHT S., McCORMAC J., VAN EYLEN V. et al.
Astron. & Astrophys., submitted
arxiv  

KELT-20b: A giant planet with a period of P~ 3.5 days transiting the V~ 7.6 early A star HD 185603
2017 LUND M., RODRIGUEZ J., ZHOU G., SCOTT GAUDI B., STASSUN K. et al.
Astron. J., 154, 194
paper  arxiv  

The DEdicated MONitor of EXotransits and Transients (DEMONEXT): System Overview and Year One Results from a Low-Cost Robotic Telescope for Follow-Up of Exoplanetary Transits and Transients
2017 VILLANUEVA S., GAUDI S., POGGE R., EASTMAN J., STASSUN K. te al.
ApJ, submitted
arxiv