Planet HD 209458 b

Name HD 209458 b
Discovered in 1999
Mass 0.69 (± 0.017) MJ
Semi-major axis 0.04747 (± 0.00055) AU
Orbital period 3.52472 (± 2.82e-05) day
Eccentricity 0.0082 ( -0.0078 +0.0082 )
ω 43.8 (± 68.0) deg
Tperi 2452968.399 JD
Radius 1.38 (± 0.018) RJ
Inclination 86.59 (± 0.046) deg;
Update Feb. 26, 2015
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection method Primary Transit
Molecules detectedH2O
H
Na
TiO
VO
H
Mg
Mg
Primary transit 2453344.76824 (± 0.000617) JD
Secondary transit
Anomaly angle
impact Parameter b
Time Vr=0
Velocity Semiamplitude K 84.3 (± 0.88) °
Calculated temperature
Measured temperature
Hottest point longitute
Geometric albedo 0.038 (± 0.045)
Surface gravity log(g/gH)
Alternate Names

Observability Predictor

Remarks

June 12: Crossfield et al (2012) estimate an average day side brightness temperature of 1320 +/- 80K.
22 Mar 05: Direct thermal emission found with Spitzer by Deming et al (2005)
4 Feb 04: Oxygen and Carbon detected in the atmosphere (Vidal-Madjar et al 2004)
Nov 01: Na detected in the planet atmosphere (Charbonneau et al 2001)
12 Mar. 03: Detection of an extended cometary-shaped atmosphere (Vidal Madjar et al 2003)
(Comment: the cometary shape was predicted in 1997 (Schneider et al 1998) - Reply)

Other web-pages

Star

Name HD 209458
Distance 47.0 pc
Spectral type G0 V
Apparent magnitude V 7.65
Mass 1.148 ( -0.022 +0.022 ) MSun
Age 4.0 (± 2.0) Gyr
Effective temperature 6092.0 (± 103.0) K
Radius 1.203 (± 0.061) RSun
Metallicity [Fe/H] 0.02 (± 0.05)
Detected Disc
Magnetic Field
RA2000 22:03:10.0
Dec2000 +18:53:04
Alternate Names
Planetary system 1 planet

More data


Related publications

Balancing the Energy Budget of Short-Period Giant Planets: Evidence for Reflective Clouds and Optical Absorbers
2015 SCHWARTZ J. & COWAN N.
MNRAS, submitted
arxiv  

On the Eccentricity Distribution of Short-Period Single-Planet Systems
2011 WANG J. & FORD E.
MNRAS, 418, 1822
paper   arxiv

Homogeneous studies of transiting extrasolar planets. III. Additional planets and stellar models
2010 SOUTHWORTH J.
MNRAS, 408, 1689
paper   arxiv   ADS  

A Spitzer Infrared Radius for the Transiting Extrasolar Planet HD 209458 b
2006 RICHARDSON J., HARRINGTON J., SEAGER S. a DEMING D.
ApJ., 649, 1043
paper

The ELODIE survey for northern extra-solar planets. III: Three planetary candidates detected with ELODIE.
2004 NAEF D., MAYOR M., BEUZIT J.-L., PERRIER C. QUELOZ D., UDRY S.,& SIVAN J.-P.
Astron. & Astrophys., 414, 351
paper

The Very Low Albedo of an Extrasolar Planet: MOST Spacebased Photometry of HD 209458
2008 ROWE J., MATTHEWS J., SEAGER S., MILLER-RICCI E., SASSELOV D., KUSCHNIG R., GUENTHER D., MOFFAT A., RUCINSKI S., WALKER G. & WEISS W.
ApJ., 689, 1345
paper

Stellar Diameters and Temperatures VI. High angular resolution measurements of the transiting exoplanet host stars HD 189733 and HD 209458 and implications for models of cool dwarfs
2015 BOYAJIAN T., von BRAUN K., FEIDEN G., HUBER D., BASU S. et al.
MNRAS, 447, 846
paper  arxiv  

On the Age of Stars Harboring Transiting Planets
2006 MELO C., SANTOS N., PONT F., GUILLOT T., ISRAELIAN G., MAYOR M., QUELOZ D., & UDRY S.
Astron. & Astrophys., 460, 251
paper

Spectroscopic [Fe/H] for 98 extra-solar planet-host stars: Exploring the probability of planet formation.
2004 SANTOS N., ISRAELIAN G., MAYOR M.
Astron. & Astrophys., 415, 1153
paper