HD 206610

HD 206610 / Bosona

SDSS image of HD 206610
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius[1]
Right ascension 21h 43m 24.900s[2]
Declination −07° 24′ 29.71″[2]
Apparent magnitude (V) 8.34[1]
Characteristics
Evolutionary stage subgiant[3]
Spectral type K0III[4]
B−V color index 1.009±0.019[1]
Astrometry
Radial velocity (Rv)−18.62±0.12[2] km/s
Proper motion (μ) RA: 2.184±0.027 mas/yr[2]
Dec.: 1.781±0.024 mas/yr[2]
Parallax (π)6.7637 ± 0.0270 mas[2]
Distance482 ± 2 ly
(147.8 ± 0.6 pc)
Absolute magnitude (MV)1.99[1]
Details
Mass1.51±0.05[5] M☉
Radius6.0±0.2[5] R☉
Luminosity18±1[5] L☉
Surface gravity (log g)3.22±0.02[6] cgs
Temperature4,819±9[6] K
Metallicity [Fe/H]0.09±0.05[6] dex
Rotational velocity (v sin i)1.77±0.40[6] km/s
Age3.0±0.3[5] years
Other designations
BD−08°5719, Gaia DR2 2667434008056899712, HD 206610, HIP 107251, SAO 145619, TIC 333314269, TYC 5221-00210-1, 2MASS J21432490-0724296, WISE J214324.89-072429.7[7]
Database references
SIMBADdata

HD 206610, also known as Bosona, is a star with an orbiting exoplanet in the constellation of Aquarius. Based on parallax measurements, it is located at a distance of approximately 482 light years from the Sun.[2] The absolute magnitude of this star is 1.99,[1] but at that distance it is too faint to view with the naked eye, having an apparent visual magnitude of 8.34.[1] The system is drifting closer with a radial velocity of −18.6 km/s.[2]

This is an aging K-type subgiant star[3] with a stellar classification of K0III.[4] Having exhausted the supply of hydrogen at its core, the star is cooling and expanding along the red giant branch. At the age of about three billion years, it has 1.5 times the Sun's mass and has grown to six times the radius of the Sun.[5] It has a similar iron abundance to the Sun and is spinning with a projected rotational velocity of 1.77 km/s.[6] The star is radiating 18[5] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,819 K.[6]

The star HD 206610 and its exoplanet HD 206610 b are named Bosona and Naron respectively. The names were selected in the NameExoWorlds campaigns by Bosnia and Herzegovina during the 100th anniversary of the IAU. Bosona is the historic name for Bosnia, Horion Bosona, described in De Administrando Imperio by Porphyrogenitus in 10th century, and its namesake the river Bosna's ancient name Bosona (Bosina, Basina, Basante). Naron is one of the names given to the Neretva river in Herzegovina originating with the Romans (Naro, Narona, Narenta, Nerenta), while in local tradition the name is said to go back even earlier with the Celts who called it Nera Etwa, which means the Flowing Divinity.[8][9][10]

  1. ^ a b c d e f Cite error: The named reference xhip was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Johnson2010 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference houk1999 was invoked but never defined (see the help page).
  5. ^ a b c d e f Cite error: The named reference Bonfanti_et_al_2016 was invoked but never defined (see the help page).
  6. ^ a b c d e f Cite error: The named reference Jofré_et_al_2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference AD Orion was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference IAU was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference NameExo was invoked but never defined (see the help page).