Planet HD 195689 b

Name HD 195689 b
Planet Status Confirmed
Discovered in 2017
Mass
Mass*sin(i)
Semi-Major Axis 0.03462 ( -0.0093 +0.011 ) AU
Orbital Period 1.4811235 (± 1.1e-06) day +
Eccentricity
ω
Tperi
Radius 1.888 ( -0.052 +0.062 ) RJ
Inclination 86.79 (± 0.25) deg
Update 2018-12-10
Detection Method Primary Transit
Mass Detection Method
Radius Detection Method Primary Transit
Primary transit
Secondary transit 2457095.18572 (± 0.00014) JD
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 4600.0 (± 150.0) K
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names KELT-9 b

Star

HD 195689
Name HD 195689
Distance
Spectral type A0
Apparent magnitude V 7.56
Mass
Age
Effective temperature 10170.0 K
Radius
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000 20:31:26.4
Dec2000 +39:56:20
Alternate Names KELT-9
Planetary system 1 planet

More data

Atmospheric parameters

Temperatures

Data Source Type Result Value Result Figure Notes Reference
Measurements Day Average 4050.0 2017 - GAUDI B.

Molecules

Molecule Data Source Type Result Value Result Figure Notes Reference
Fe Measurements Detected 2018 - HOEIJMAKERS
Fe+ Measurements Detected 2018 - HOEIJMAKERS
Ti+ Measurements Detected 2018 - HOEIJMAKERS

Observability Predictor

Remarks

Scott Gaudi et al. 2017 measure a day side temperature of Kelt-9 b of 4600K

Related publications

A ground-based NUV secondary eclipse observation of KELT-9b
2018 HOOTON M., WATSON Ch., de MOOIJ E., GIBSON N. & KITZMANN D.
ApJ. Letters, 869, L25
paper  arxiv  

The Effects of Barycentric and Asymmetric Transverse Velocities on Eclipse and Transit Times
2018 CONROY K., PRSA A., HOVART M. & STASSUN K.
ApJ, accepted
arxiv  

Stellar photospheric abundances as a probe of discs and planets
2018 JERMYN A. & KAMA M.
MNRAS, 476, 4418
paper  arxiv  

An extended hydrogen envelope of the extremely hot giant exoplanet KELT-9b
2018 YAN, F., HENNING, T.
Nature Astron., accepted
arxiv  paper   ADS  

Atomic iron and titanium in the atmosphere of the exoplanet KELT-9b
2018 HOEIJMAKERS, H., EHRENREICH, D., HENG, K., KITZMANN, D. , GRIMM, S. et al.
Nature, 560
paper   arxiv   ADS  

The Peculiar Atmospheric Chemistry of KELT-9b
2018 KITZMANN D., HENG K., RIMMER P., HOEIJMAKERS H., TSAI Sh.-M. et al.
ApJ, 863, 183
arxiv   paper  

Atmospheric dynamics and the variable transit of KELT-9 b
2018 WILSON CAULEY P., SHKOLNIK E., ILYIN I., STRASSMEIER K., REDFIELD S. & JENSEN A.
Astron. J., 157, 69
paper  arxiv  

Extreme-ultraviolet Radiation from A-stars: Implications for Ultra-hot Jupiters
2018 FOSSATI L., KOSKINEN T., LOTHRINGER J., FRANCE K. YOUNG M. & SREEJITH A.
ApJ. Letters, 868, L30
paper  

A giant planet undergoing extreme-ultraviolet irradiation by its hot massive-star host
2017 GAUDI B., STASSUN K., COLLINS K., BEATTY Th., ZHOU G. et al.
Nature, 546, 514
paper