HD 110458

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HD 110458
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) +4.66[1]
Characteristics
Spectral type K0III[3][4]
U−B Template:Engvar +1.01
B−V Template:Engvar +1.09
Astrometry
Radial velocity (Rv)Script error: No such module "val".[1] km/s
Proper motion (μ) RA: Script error: No such module "val".[2] mas/yr
Dec.: Script error: No such module "val".[2] mas/yr
Parallax (π)17.11±0.22 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)Script error: No such module "val".[5]
Details
Mass1.71[6] Template:Solar mass
RadiusScript error: No such module "val".[7] Template:Solar radius
LuminosityScript error: No such module "val".[7] Template:Solar luminosity
Surface gravity (log g)2.61[5] cgs
TemperatureScript error: No such module "val".[6] K
Metallicity [Fe/H]0.19[5] dex
Age2.61[6] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[8]
Database references
SIMBADdata

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HD 110458 is a single[9] star in the southern constellation of Centaurus. It has the Bayer designation w Centauri, while HD 110458 is the star's identifier in the Henry Draper Catalogue. The star has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.66.[1] It is located at a distance of approximately 191 light years from the Sun based on parallax,[2] but is drifting closer with a radial velocity of −12 km/s.[1] Based on its space motion, in 1972 O. J. Eggen listed it as a probable member of the Hyades group.[10]

The stellar classification of HD 110458 is K0III,[3][4] which indicates this is an aging giant star that has exhausted the supply of hydrogen at its core. It is estimated to be 2.6[6] billion years old with 1.7[6] times the mass of the Sun and has expanded to 11.6[7] times the girth of the Sun. The star is radiating 61[7] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,682 K.[6]

References

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  1. ↑ a b c d e Template:Cite XHIP
  2. ↑ a b c d e f Script error: No such module "citation/CS1".
  3. ↑ a b Script error: No such module "citation/CS1".
  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ a b c Script error: No such module "citation/CS1".
  6. ↑ a b c d e f Script error: No such module "citation/CS1".
  7. ↑ a b c d Template:Cite Gaia DR2
  8. ↑ Template:Cite simbad
  9. ↑ Script error: No such module "citation/CS1".
  10. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Centaurus

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