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 1.84 (± 0.04) RJ +
Inclination 87.2 (± 0.4) deg +
Update 2020-05-01
Detection Method Primary Transit
Mass Detection Method Spectrum
Radius Detection Method Primary Transit
Primary transit 2458683.4449 (± 8e-05) JD
Secondary transit 2457095.18572 (± 0.00014) JD
λ 272.0 (± 15.0) 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
Ca Measurements Detected 2003 - SOZZETTI A.
Cr Measurements Detected 2019 - HOEIJMAKERS H.
Fe Measurements Detected 2018 - HOEIJMAKERS
Fe+ Measurements Detected 2018 - HOEIJMAKERS
H Measurements Detected 2020 - WYTTENBACH A.
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 - HOEIJMAKERS H.
Measurements Detected 2019 - LOTHRINGER J. & BARMAN T.
Sc Measurements Detected 2019 - HOEIJMAKERS H.
Sr Measurements Detected 2019 - HOEIJMAKERS H.
Ti Measurements Detected 2019 - LOTHRINGER J. & BARMAN T.
Measurements Detected 2019 - HOEIJMAKERS H.
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

Detection of ionized calcium in the atmosphere of the ultra-hot Jupiter KELT-9b
2020 TURNER J., de MOOIJ E., JAYAWARDHANA R., YOUNG M., FOSSATI L. et al.
ApJ. Letters, 888, L13
paper  arxiv  

Exploring the Atmospheric Dynamics of the Extreme Ultrahot Jupiter KELT-9b Using TESS Photometry
2020 WONG I., SHPORER A., KITZMANN D., MORRIS B., HENG K. et al.
Astron. J., 160, 88
paper  

A transition between the hot and the ultra-hot Jupiter atmospheres
2020 BAXTER C., DESERT J.-M., PARMENTIER V., LINE M., FORTNEY J. et al.
Astron. & Astrophys., 639, A36
  paper  

KELT-9 b's Asymmetric TESS Transit Caused by Rapid Stellar Rotation and Spin-Orbit Misalignment
2020 AHLERS J., JOHNSON M., STASSUN K., COLON K., BARNES J. et al.
Astron. J., 160, 4
paper   arxiv

Mass loss rate and local thermodynamic state of KELT-9 b thermosphere from the hydrogen Balmer series
2020 WYTTENBACH A., MOLLIÈRE P., EHRENREICH D., CEGLA H., BOURRIER V. et al.
Astron. & Astrophys., in press
paper   arxiv

Neutral Iron Emission Lines From The Day-side Of KELT-9b -- The GAPS Programme With HARPS-N At TNG XX
2020 PINO L., DESERT J.-M., BROGI M., MALAVOLTA L., WYTTENBACH A. et al.
ApJ. Letters, 894, L27
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., 631, A34
paper  arxiv  

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

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  

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  

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  

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, 888, L15
paper  arxiv  

Interpreting High-Resolution Spectroscopy of Exoplanets Using Cross-Correlations and Supervised Machine Learning
2019 FISHER Ch., HOEIJAMKERS J., KITZMANN D., MARQUEZ-NELLA P., GRIMM S. et al.
ApJ, submitted
arxiv  

Ionized calcium in the atmospheres of two ultra-hot exoplanets WASP-33b and KELT-9b
2019 YAN F., CASASAYAS-BARRIS N., MOLAVERDIKHANI K., ALONSO-FLORIANO F., REINDERS A. et al.
Astron. & Astrophys., in press
paper  arxiv  

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  

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  

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  

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  

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  

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

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

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  

When Do Planets Form? The Search for Extrasolar Planets Around Metal-Poor Stars.
2003 SOZZETTI A., LATHAM D., TORRES G., STEKANIK R., BOSS A., CARNEY B. & LAIRD J.
BAAS, 35, 34.03
abstract