Omega1 Aquilae

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ω1 Aquilae
Template:Location mark
Location of ω1 Aquilae (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aquila[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 5.284[3]
Characteristics
Evolutionary stage subgiant[4][2]
Spectral type F0 IV[5]
U−B Template:Engvar +0.204[3]
B−V Template:Engvar +0.238[3]
Astrometry
Radial velocity (Rv)−14.3[6] km/s
Proper motion (μ) RA: +1.070 mas/yr[2]
Dec.: +13.640 mas/yr[2]
Parallax (π)8.266±0.0721 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−0.24[1]
Details
Mass2.85±0.06[4] Template:Solar mass
Radius5.38±0.03[2] Template:Solar radius
Luminosity92.2±1.6[2] Template:Solar luminosity
Surface gravity (log g)3.26[2] cgs
Temperature7,648Script error: No such module "Su".[2] K
Rotational velocity (v sin i)89[4] km/s
AgeScript error: No such module "val".[2] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[7]
Database references
SIMBADdata

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Omega1 Aquilae is a single[8] star in the equatorial constellation of Aquila. Its name is a Bayer designation that is Latinized from ω1 Aquilae, and abbreviated Omega1 Aql or ω1 Aql. With an apparent visual magnitude of 5.2[3] it is a faint, yellow-white hued star that can be seen with the naked eye in dark skies. From the annual parallax shift of Script error: No such module "val".,[2] the distance to this star can be estimated as Script error: No such module "convert"., give or take a 3 light year margin of error. It is drifting closer to the Sun with a radial velocity of −14 km/s.[6]

The spectrum of this star fits a stellar classification of F0 IV.[5] Typically, a luminosity class of IV means that the star is in the subgiant stage. It is rotating rapidly with a projected rotational velocity of 89 km/s.[4] The star has 2.85 times the mass of the Sun[4] and five times the Sun's radius. It is radiating 85 times the luminosity of the Sun from its photosphere at an effective temperature of 7,766 K.[2]

References

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External links

Template:Stars of Aquila