HAT-P-3

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.[7][9]

HAT-P-3 / Dombay
Observation data
Epoch J2000      Equinox J2000
Constellation Ursa Major[1]
Right ascension 13h 44m 22.5937s[2]
Declination +48° 01′ 43.206″[2]
Apparent magnitude (V) 11.577(67)[3]
Characteristics
Spectral type K5[4]
Apparent magnitude (B) 12.53(20)[5]
Apparent magnitude (V) 11.577(67)[3]
Apparent magnitude (I) 10.504(79)[3]
Apparent magnitude (J) 9.936(22)[6]
Apparent magnitude (H) 9.542(28)[6]
Apparent magnitude (K) 9.448(25)[6]
Variable type planetary transit[7]
Astrometry
Radial velocity (Rv)−23.8±0.1[7] km/s
Proper motion (μ) RA: −19.619(12) mas/yr[2]
Dec.: −23.973(15) mas/yr[2]
Parallax (π)7.4159 ± 0.0143 mas[2]
Distance439.8 ± 0.8 ly
(134.8 ± 0.3 pc)
Absolute magnitude (MV)5.87(15)[8]
Details
Mass0.925+0.031
−0.0134[4] M☉
Radius0.850+0.021
−0.010[4] R☉
Luminosity0.435(53)[8] L☉
Surface gravity (log g)4.58(10)[4] cgs
Temperature5,190(80)[4] K
Metallicity [Fe/H]0.24(8)[4] dex
Rotational velocity (v sin i)1.4(5)[4] km/s
Age2.9+1.7
−3.7[4] Myr
Other designations
Dombay, Gaia DR3 1510191594552968832, TYC 3466-819-1, GSC 03466-00819, 2MASS J13442258+4801432[5]
Database references
SIMBADdata

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.[10][11]

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.[7]

The HAT-P-3 planetary system[8][12]
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

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. Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. Droege, Thomas F.; et al. (2006). "TASS Mark IV Photometric Survey of the Northern Sky". The Publications of the Astronomical Society of the Pacific. 118 (850): 1666–1678. arXiv:astro-ph/0610529. Bibcode:2006PASP..118.1666D. doi:10.1086/510197. JSTOR 10.1086/510197. S2CID 11716917.Vizier catalog entry
  4. Mancini, L.; Esposito, M.; Covino, E.; Southworth, J.; Biazzo, K.; Bruni, I.; Ciceri, S.; Evans, D.; Lanza, A. F.; Poretti, E.; Sarkis, P.; Smith, A. M. S.; Brogi, M.; Affer, L.; Benatti, S.; Bignamini, A.; Boccato, C.; Bonomo, A. S.; Borsa, F.; Carleo, I.; Claudi, R.; Cosentino, R.; Damasso, M.; Desidera, S.; Giacobbe, P.; González-Álvarez, E.; Gratton, R.; Harutyunyan, A.; Leto, G.; et al. (2018). "The GAPS programme with HARPS-N at TNG". Astronomy & Astrophysics. 613: A41. arXiv:1802.03859. Bibcode:2018A&A...613A..41M. doi:10.1051/0004-6361/201732234. S2CID 73565379.
  5. "TYC 3466-819-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2013-10-29.
  6. Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331. Vizier catalog entry
  7. 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. arXiv:0707.4268. Bibcode:2007ApJ...666L.121T. doi:10.1086/521792. S2CID 16549542.
  8. 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. arXiv:1103.3078. Bibcode:2011AJ....141..179C. doi:10.1088/0004-6256/141/6/179. S2CID 56378813.
  9. 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. arXiv:1305.0833. Bibcode:2013ApJ...770..102T. doi:10.1088/0004-637X/770/2/102. S2CID 51509956.
  10. "Approved names". NameExoworlds. Archived from the original on 2019-12-19. Retrieved 2020-01-02.
  11. "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
  12. 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:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID 118923163.


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