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Exoplanet List of exoplanets
Exoplanet Comparison HAT-P-14 b.png
Size comparison of HAT-P-14b (gray) with Jupiter.
Parent star
Star HAT-P-14
Constellation Hercules[1]
Right ascension (α) 17h 20m 27.8775s[2]
Declination (δ) +38° 14′ 31.911″[2]
Apparent magnitude (mV) 9.98
Distance820±60[2] ly
(250±20[2] pc)
Spectral type F
Mass (m) 1.386 ± 0.045 M
Radius (r) 1.468 ± 0.054[3] R
Temperature (T) 6600 ± 90 K
Metallicity [Fe/H] 0.11 ± 0.08
Age 1.3 ± 0.4 Gyr
Orbital elements
Semi-major axis(a) 0.06062+0.00065
[4] AU
Eccentricity (e) 0.1074+0.0076
Orbital period(P) 4.627682±0.000003[5] d
Inclination (i) 83.50±0.30[6]°
Time of transit (Tt) 2455268.64237±0.00031[5] JD
Physical characteristics
Mass(m)2.303±0.054[4] MJ
Radius(r)1.150±0.052[6] RJ
Discovery information
Discovery date 2010-03-10
Discoverer(s) HATNet Project[6]
Discovery method Transit
Discovery status confirmed[6][7]
Database references
Extrasolar Planets
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HAT-P-14b is an extrasolar planet located approximately 250 parsecs (820 ly)[2] away in the constellation of Hercules, orbiting the 10th magnitude F-type star HAT-P-14. This planet was discovered in 2010 by the HATNet Project using the transit method.[6] It was independently detected by the SuperWASP project.[7]


HAT-P-14b is located very close orbit to its star, taking only 4.6 days to complete one orbit. Observations of the Rossiter–McLaughlin effect with the Keck telescope show that it orbits in a retrograde fashion relative to the rotation axes of its parent star.[3]


  1. ^ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034.  Vizier query form
  2. ^ a b c d e Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172Freely accessible. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. Gaia Data Release 1 catalog entry
  3. ^ a b Winn, Joshua N.; et al. (2011). "Orbital Orientations of Exoplanets: HAT-P-4b is Prograde and HAT-P-14b is Retrograde". The Astronomical Journal. 141 (2). 63. arXiv:1010.1318Freely accessible. Bibcode:2011AJ....141...63W. doi:10.1088/0004-6256/141/2/63. 
  4. ^ a b c Bonomo, A. S.; et al. (2017). "The GAPS Programme with HARPS-N at TNG . XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602. A107. arXiv:1704.00373Freely accessible. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. 
  5. ^ a b Nascimbeni, V.; et al. (2011). "TASTE: The Asiago Search for Transit timing variations of Exoplanets. I. Overview and improved parameters for HAT-P-3b and HAT-P-14b". Astronomy and Astrophysics. 526. A85. arXiv:1011.6395Freely accessible. Bibcode:2011A&A...527A..85N. doi:10.1051/0004-6361/201015199. 
  6. ^ a b c d e Torres, G.; et al. (2010). "HAT-P-14b: A 2.2 MJ Exoplanet Transiting a Bright F Star". The Astrophysical Journal. 715 (1): 458–467. arXiv:1003.2211Freely accessible. Bibcode:2010ApJ...715..458T. doi:10.1088/0004-637X/715/1/458. 
  7. ^ a b Simpson, E. K.; et al. (2011). "Independent Discovery of the Transiting Exoplanet HAT-P-14b". The Astronomical Journal. 141 (5). 161. arXiv:1009.3470Freely accessible. Bibcode:2011AJ....141..161S. doi:10.1088/0004-6256/141/5/161. 

External links[edit]

Media related to HAT-P-14b at Wikimedia Commons

Coordinates: Sky map 17h 20m 28s, +38° 14′ 32″