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.
ApJ, submitted
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