HAT-P-3

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

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]

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]

  1. ^ Cite error: The named reference Roman1987 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Droege2006 was invoked but never defined (see the help page).
  4. ^ a b c d e f g h Cite error: The named reference mancini2018 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Simbad was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Skrutskie2006 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Torres2007 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Chan2011 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Todorov2013 was invoked but never defined (see the help page).
  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.