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HD 179949
| 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] |
| Distance | 89.82 ± 0.09 ly (27.54 ± 0.03 pc) |
| Absolute magnitude (MV) | 4.05[2] |
| Details[4] | |
| Mass | 1.23±0.01 M☉ |
| Radius | 1.2±0.01 R☉ |
| Luminosity | 1.95±0.01 L☉ |
| Surface gravity (log g) | 4.36±0.01 cgs |
| Temperature | 6,220±28 K |
| Metallicity [Fe/H] | +0.21[5] dex |
| Rotational velocity (v sin i) | 6.84 km/s |
| Age | 1.20±0.60 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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]
- ^ a b c d Cite error: The named reference
Gaia DR3was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
Anderson2012was invoked but never defined (see the help page). - ^ Cite error: The named reference
houk1978was invoked but never defined (see the help page). - ^ Cite error: The named reference
Bonfanti2016was invoked but never defined (see the help page). - ^ Cite error: The named reference
Delgado_Mena2015was invoked but never defined (see the help page). - ^ Cite error: The named reference
SIMBADwas invoked but never defined (see the help page). - ^ "NameExoWorlds Brunei – Bruneiastronomy.org". Retrieved 2020-10-11.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
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