Planet HD 195689 b

Name HD 195689 b
Planet Status Confirmed
Discovered in 2017
Mass 2.88 (± 0.35) MJ +
Mass*sin(i)
Semi-Major Axis 0.03368 (± 0.00078) AU +
Orbital Period 1.4811235 (± 1.1e-06) day +
Eccentricity
ω
Tperi
Radius 1.936 (± 0.047) RJ +
Inclination 86.79 (± 0.25) deg
Update 2019-10-04
Detection Method Primary Transit
Mass Detection Method Spectrum
Radius Detection Method Primary Transit
Primary transit
Secondary transit 2457095.18572 (± 0.00014) JD
λ 274.22 (± 0.46) deg
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 293.0 (± 32.0) m/s
Calculated temperature 3921.0 (± 180.0) 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
Cr Measurements Detected 2019 - HOEIJMAKERS H.
Fe Measurements Detected 2018 - HOEIJMAKERS
Fe+ Measurements Detected 2018 - HOEIJMAKERS
H Measurements Detected 2019 - GARCIA MUÑOZ A. & SCHNEIDER P.
H2 Measurements Detected 2019 - MANSFIELD M.
K Measurements Detected 2019 - LOTHRINGER J. & BARMAN T.
Mg Measurements Detected 2019 - LOTHRINGER J. & BARMAN T.
Measurements Detected 2019 - HOEIJMAKERS H.
Sc Measurements Detected 2019 - HOEIJMAKERS H.
Sr Measurements Detected 2019 - HOEIJMAKERS H.
Ti Measurements Detected 2019 - HOEIJMAKERS H.
Measurements Detected 2019 - LOTHRINGER J. & BARMAN T.
Ti+ Measurements Detected 2018 - HOEIJMAKERS
Y Measurements Detected 2019 - HOEIJMAKERS H.

Observability Predictor

Remarks

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

Related publications

Evidence for H2 Dissociation and Recombination Heat Transport in the Atmosphere of KELT-9b
2019 MANSFIELD M., BEAN J., STEVENSON K., KOMACEK Th., BELL T. et alo.
ApJ, submitted
arxiv  

A spectral survey of an ultra-hot Jupiter: Detection of metals in the transmission spectrum of KELT-9 b
2019 HOEIJMAKERS H., EHRENREICH D., KITZMANN D., ALLART R., GRIMM S. et al.
Astron. & Astrophys., 627, A165
paper  arxiv  

The Influence of Host Star Spectral Type on Ultra-hot Jupiter Atmospheres
2019 LOTHRINGER J. & BARMAN T.
ApJ, 876, 69
paper  

Detection limits of exoplanetary atmospheres with 2-m class telescopes
2019 KABATH P., ZAK J., BOFFIN H., IVANOV V., JONES D. & SKARKA M.
PASP, 131, 085001
paper  arxiv  

The GAPS Programme with HARPS-N at TNG XIX. Atmospheric Rossiter-McLaughlin effect and improved parameters of KELT-9b
2019 BORSA F., RAINER M., BONOMO A., BARBATO D., FOSSATI L. et al.
Astron. & Astrophys., accepted
arxiv  

Rapid escape of ultra-hot exoplanet atmospheres driven by Hydrogen Balmer absorption
2019 GARCIA MUÑOZ A. & SCHNEIDER P.
ApJ. Letters, accepted
arxiv  

Exploring the atmospheric dynamics of the extreme ultra-hot Jupiter KELT-9b using TESS photometry
2019 WONG I., SHPORER A., MORRIS B., HENG K., KITZMANN D. et al.
Astron. J., submitted
arxiv  

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