HD 179949

HD 179949 / Gumala
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 19h 15m 33.2301s[1]
Declination −24° 10′ 45.671″[1]
Apparent magnitude (V) 6.25[2]
Characteristics
Spectral type F8 V[3]
B−V color index 0.548±0.009[2]
Astrometry
Radial velocity (Rv)−24.56±0.08[2] km/s
Proper motion (μ) RA: 118.567(30) mas/yr[1]
Dec.: −102.364(22) mas/yr[1]
Parallax (π)36.3115 ± 0.0375 mas[1]
Distance89.82 ± 0.09 ly
(27.54 ± 0.03 pc)
Absolute magnitude (MV)4.05[2]
Details[4]
Mass1.23±0.01 M
Radius1.2±0.01 R
Luminosity1.95±0.01 L
Surface gravity (log g)4.36±0.01 cgs
Temperature6,220±28 K
Metallicity [Fe/H]+0.21[5] dex
Rotational velocity (v sin i)6.84 km/s
Age1.20±0.60 Gyr
Other designations
13 Sgr, V5652 Sgr, CD−24° 15161, GJ 749, HD 179949, HIP 94645, HR 7291, SAO 187883[6]
Database references
SIMBADdata

HD 179949 is a 6th magnitude star in the constellation of Sagittarius. It is a yellow-white dwarf (spectral class F8 V), a type of star hotter and more luminous than the Sun. The star is located about 90 light years from Earth and might be visible under exceptionally good conditions to an experienced observer without technical aid; usually binoculars are needed.

The star HD 179949 is named Gumala. The name was selected in the NameExoWorlds campaign by Brunei,[7] during the 100th anniversary of the IAU. Gumala is a Malay word, which means a magic bezoar stone found in snakes, dragons, etc.[8][9]

  1. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Bonfanti2016 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Delgado_Mena2015 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ "NameExoWorlds Brunei – Bruneiastronomy.org". Retrieved 2020-10-11.
  8. ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
  9. ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.