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 |
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
The GAPS Programme at TNG: XXXVI. Measurement of the Rossiter-McLaughlin effect and revising the physical and orbital parameters of the HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, HAT-P-29 eccentric planetary systems
2022
MANCINI L., ESPOSITO M., COVINO E., SOUTHWORTH J., PORETTI E. et al.
Astron. & Astrophys., 664, A162
paper arxiv
Light Curve Analysis of Ground-Based Data from Exoplanets Transit Database
2019
DAVOUDI F., JAFARZADEH S., PORO A., BASTURK O., MESOROUSH S. et al.
New Astronomy, in press
paper arxiv
A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars
2015
MAXTED P., SERENELLI A. & SOUTHWORTH J.
Astron. & Astrophys., 577, A90
paper 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
The Exoplanet Handbook
2011
Michael Perryman
Content
Content and Chapter 5
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
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
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
paper arxiv
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
