HAT-P-14b

HAT-P-14b
Exoplanet List of exoplanets

Size comparison of HAT-P-14b (gray) with Jupiter.
Parent star
Star HAT-P-14
Constellation Hercules[1]
Right ascension (α) 17h 20m 27.876s[2]
Declination (δ) +38° 14 31.94[2]
Apparent magnitude (mV) 9.98
Distance670 ± 36 ly
(205 ± 11 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) 0.0606 ± 0.0007 AU
(~9.06 Gm)
    ~0.295 mas
Periastron (q) 0.0541 ± 0.0014 AU
(~8.09 Gm)
Apastron (Q) 0.0671 ± 0.0016 AU
(~10.03 Gm)
Eccentricity (e) 0.107 ± 0.013
Orbital period(P) 4.6267669 ± 5e-06 d
    (~111.0424 h)
Inclination (i) 83.5 ± 0.3°
Physical characteristics
Mass(m)2.232 ± 0.059 MJ
Radius(r)1.150 ± 0.052 RJ
Discovery information
Discovery date 2010-03-10
Discoverer(s) HATNet Project[4]
Discovery method Transit
Discovery status confirmed[4][5]
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HAT-P-14b is an extrasolar planet located approximately 205 parsecs (670 ly) 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.[4] It was independently detected by the SuperWASP project.[5]

Orbit

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]

References

  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. 1 2 Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862. Vizier catalog entry
  3. 1 2 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. 1 2 3 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.
  5. 1 2 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.

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

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


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