Planet HAT-P-21 b

Name HAT-P-21 b
Planet Status Confirmed
Discovered in 2010
Mass 4.063 ( -0.161 +0.161 ) MJ
Mass*sin(i)
Semi-Major Axis 0.0494 (± 0.0007) AU
Orbital Period 4.124461 (± 7e-06) day
Eccentricity 0.228 (± 0.016)
ω 300.0 (± 3.0) deg
Tperi
Radius 1.024 ( -0.092 +0.092 ) RJ
Inclination 87.2 (± 0.7) deg
Update 2014-09-28
Detection Method Primary Transit
Mass Detection Method
Radius Detection Method
Primary transit 2454996.41312 (± 0.00069) JD
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

HAT-P-21
Name HAT-P-21
Distance 254.0 (± 19.0) pc
Spectral type G3
Apparent magnitude V 11.46
Mass 0.947 (± 0.042) MSun
Age 10.2 (± 2.5) Gyr
Effective temperature 5588.0 (± 80.0) K
Radius 1.105 (± 0.083) RSun
Metallicity [Fe/H] 0.01 (± 0.08)
Detected Disc
Magnetic Field
RA2000 11:25:06.0
Dec2000 +41:01:41
Alternate Names
Planetary system 1 planet

More data

Observability Predictor

Remarks

11 Dec 2010: The time of secondary eclipse is not measured but derived from the Keplerian orbit (Bakos et al. 2010)

Related publications

A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars
2015 MAXTED P., SERENELLI A. & SOUTHWORTH J.
Astron. & Astrophys., accepted
arxiv  

A Uniformly Derived Catalogue of Exoplanets from Radial Velocities
2012 HOLLIS M., BALAN S., LEVER G. & LAHAV O.
MNRAS, 423, Issue 3, 2800-2814
paper  arxiv

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

Taxonomy of the extrasolar planet
2012 PLAVALOVA E.
Astrobiology, 12, 361
paper   arxiv

Defining and cataloging exoplanets: The exoplanet.eu database
2011 SCHNEIDER J., DEDIEU C., LE SIDANER P., SAVALLE R. & ZOLOTUKHIN I.
Astron. & Astrophys., 532, A79
paper   arxiv

Prospecting transit duration variations in extrasolar planetary systems
2011 DAMIANI C. & LANZA A.
Astron. & Astrophys., 535, A116
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The Exoplanet Orbit Database
2011 WRIGHT J., FAKHOURI O., MARCY G., HAN E., FENG Y., JOHNSON A., HOWARD A., VALENTI J., ANDERSON J. & PISKUNOV N.
PASP, 123, 412
paper   arxiv

The Exoplanet Handbook
2011 Michael Perryman
Content
Content and Chapter 5

Planets from the HATNet project
2011 BAKOS G., HARTMAN J., TORRES G., KOVACS G., NOYES R., LATHAM D., SASSELOV D. & BEKY B.
arxiv

The Reflection Effect in Interacting Binaries or in Planet-Star Systems
2011 BUDAJ J.
Astron. J., 141, 59
paper

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

HAT-P-20b--HAT-P-23b: Four Massive Transiting Extrasolar Planets
2010 BAKOS G., HARTMAN J., TORRES G., LATHAM D., KOVACS Ge., NOYES R., FISCHER D., JOHNSON J., MARCY G., HOWARD A., KIPPING D., ESQUERDO G., SHPORER A., BEKY B., BUCHHAVE L., PERUMPILLY G., EVERETT M., SASSELOV D., STEFANIK R., LAZAR J., PAPP I. & SARI P.
ApJ., 742, 116
paper   arxiv