Planet HAT-P-18 b

Name HAT-P-18 b
Planet Status Confirmed
Discovered in 2010
Mass 0.183 ( -0.032 +0.034 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0559 (± 0.0007) AU
Orbital Period 5.508029 (± 4.2e-06) day +
Eccentricity 0.106 ( -0.084 +0.15 )
ω 120.0 (± 56.0) deg
Tperi
Radius 0.947 ( -0.044 +0.044 ) RJ
Inclination 88.79 (± 0.21) deg +
Update 2015-11-12
Detection Method Primary Transit
Mass Detection Method
Radius Detection Method
Primary transit 2454715.02254 (± 0.00039) JD +
Secondary transit 2454717.65 (± 0.13) JD
λ 132.0 (± 15.0) deg
Impact Parameter b 0.324 (± 0.057)
Time Vr=0
Velocity Semiamplitude K
Calculated temperature 841.0 K +
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH) 2.734
Alternate Names HAT-18b

Star

HAT-P-18
Name HAT-P-18
Distance 166.0 (± 9.0) pc
Spectral type K
Apparent magnitude V 12.76
Mass 0.77 (± 0.031) MSun
Age 12.4 ( -6.4 +6.4 ) Gyr
Effective temperature 4870.0 (± 50.0) K
Radius 0.717 (± 0.026) RSun
Metallicity [Fe/H] 0.1 (± 8.0)
Detected Disc
Magnetic Field
RA2000 17:05:24.0
Dec2000 +33:00:45
Alternate Names
Planetary system 1 planet

Remarks

Alias GSC 2594-00646
Alias 2MASS 17052315+3300450

More data


Related publications

Rayleigh scattering in the transmission spectrum of HAT-P-18b
2017 KIRK J., WHEATLEY P., LOUDEN T., DOYLE A., SKILLEN I. et al.
MNRAS, 468, 3907
paper  arxiv  ADS

Ground-based transit observations of the HAT-P-18, HAT-P-19, HAT-P-27/WASP-40 and WASP-21 systems
2015 SEELIGER M., KITZE M., EMMANN R., RICHTER S., OHLERT J. et al.
MNRAS, submitted
arxiv  

Friends of Hot Jupiters III: An Infrared Spectroscopic Search for Low-Mass Stellar Companions
2015 PISKORZ D., KNUTSON H., NGO H., MUIRHEAD Ph., BATYGIN K. et al.
ApJ, 814, 148
paper  arxiv  ADS

Friends of Hot Jupiters II: No Correspondence Between Hot-Jupiter Spin-Orbit Misalignment and the Incidence of Directly Imaged Stellar Companions
2015 NGO R., KNUTSON H., HINKLEY S., CREPP J., BECHLER E. et al.
ApJ, 800, 138
paper  arxiv  ADS  

The GAPS Programme with HARPS-N at TNG. III: The retrograde orbit of HAT-P-18b
2014 ESPOSITO M., COVINO E., MANCINI L., HARUTYUNYAN A., SOUTHWORTH J. & 20 co-authors
Astron. & Astrophys., 564, L13
paper  arxiv   ADS  

Understanding the Mass-Radius Relation for Sub-Neptunes: Radius as a Proxy for Composition
2014 LOPEZ E. & FORTNEY J.
ApJ, 792, 1
paper   arxiv   ADS  

Friends of Hot Jupiters I: A Radial Velocity Search for Massive, Long-Period Companions to Close-In Gas Giant Planets
2014 KNUTSON H., FULTON B., MONTET B., KAO M., NGO H. & 8 additional authors
ApJ, 785, 126
paper   arxiv   ADS  

The Mass of KOI-94d and a Relation for Planet Radius, Mass, and Incident Flux
2013 WEISS L., MARCY G., ROWE J., HOWARD A., ISAACSON H. & 13 additional authors
ApJ, 768, 14
paper  arxiv   ADS  

The coronal X-ray–age relation and its implications for the evaporation of exoplanets
2012 JACKSON A., DAVIS T. & WHEATLEY P.
MNRAS, 422, 2024
paper   arxiv   ADS  

Constraining Tidal Dissipation in Stars from The Destruction Rates of Exoplanets
2012 PENEV K., JACKSON B., SPADA F. & THOM N.
ApJ., 751, 96
paper   arxiv   ADS  

Factors Affecting the Radii of Close-in Transiting Exoplanets
2012 ENOCH B., COLLIER CAMERON A. & HORNE K.
Astron. & Astrophys., 540, A99
paper   arxiv   ADS  

HAT-P-18b and HAT-P-19b: Two Low-Density Saturn-Mass Planets Transiting Metal-Rich K Stars
2011 HARTMAN J., BAKOS G., SATO B., TORRES G., NOYES R. & 18 co-authors
ApJ., 726, 52
paper   arxiv   ADS  

Quantization of Planetary Systems and its Dependency on Stellar Rotation
2011 ZOGHBI J.-P.
Publ. Astron. Soc. Australia, 28, 177
paper   arxiv   ADS  

The Exoplanet Handbook
2011 Michael Perryman
Content
Content and Chapter 5

Mass-loss rates for transiting exoplanets
2011 EHRENREICH D. & DESERT J.-M.
Astron. & Astrophys., 529, A136
paper   arxiv   ADS  

The Heavy Element Masses of Extrasolar Giant Planets, Revealed
2011 MILLER N. & FORTNEY J.
ApJ. Letters, 736, L29
paper   arxiv   ADS