Astronomy:HAT-P-3

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HAT-P-3, is a metal-rich K5 dwarf star located about 441 light-years away in the constellation Ursa Major. At a magnitude of about 11.5 it is not visible to the naked eye but is visible in a small to medium-sized amateur telescope. It is believed to be a relatively young star and has a slightly enhanced level of chromospheric activity.[1][2]

The star HAT-P-3 is named Dombay. The name was selected in the NameExoWorlds campaign by Russia, during the 100th anniversary of the IAU. Dombay is a resort region in the North Caucasus mountains.[3][4]

Planetary system

This star is home to the extrasolar planet HAT-P-3b, later named Teberda, discovered by the HATNet Project using the transit method.[1]

The HAT-P-3 planetary system[5][6]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b / Teberda 0.609+0.021
−0.022 MJ 		0.03899+0.00062
−0.00065 		2.8997360±0.0000020 <0.0100 87.07 ± 0.55° 0.827 ± 0.055 RJ

See also

  • List of transiting extrasolar planets

References

  1. ↑ 1.0 1.1 Torres, G. et al. (2007). "HAT-P-3b: A Heavy-Element-rich Planet Transiting a K Dwarf Star". The Astrophysical Journal Letters 666 (2): L121–L124. doi:10.1086/521792. Bibcode: 2007ApJ...666L.121T. 
  2. ↑ Todorov, Kamen O. et al. (2013). "Warm Spitzer Photometry of Three Hot Jupiters: HAT-P-3b, HAT-P-4b and HAT-P-12b". The Astrophysical Journal 770 (2): 102. doi:10.1088/0004-637X/770/2/102. Bibcode: 2013ApJ...770..102T. 
  3. ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results. 
  4. ↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/. 
  5. ↑ Chan, Tucker et al. (2011). "The Transit Light-curve Project. XIV. Confirmation of Anomalous Radii for the Exoplanets TrES-4b, HAT-P-3b, and WASP-12b". The Astronomical Journal 141 (6): 179. doi:10.1088/0004-6256/141/6/179. Bibcode: 2011AJ....141..179C. 
  6. ↑ 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. doi:10.1051/0004-6361/201629882. Bibcode: 2017A&A...602A.107B. 

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Coordinates: Sky map 13h 44m 23s, +48° 01′ 43″



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