Nu Aquilae

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Template:Short description

ν Aquilae
Template:Location mark
Location of ν Aql (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 4.72[2]
Characteristics
Evolutionary stage supergiant[3]
Spectral type F3 Ib[4]
U−B Template:Engvar +0.60[2]
B−V Template:Engvar +0.59[2]
Astrometry
Radial velocity (Rv)−2.30[5] km/s
Proper motion (μ) RA: −0.562 mas/yr[1]
Dec.: −2.294 mas/yr[1]
Parallax (π)0.8752±0.0869 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−5.58[3]
Details
Mass12.5[4] Template:Solar mass
Radius71.20Script error: No such module "Su".[6] Template:Solar radius
LuminosityScript error: No such module "val".[6] Template:Solar luminosity
Surface gravity (log g)1.43[4] cgs
TemperatureScript error: No such module "val".[6] K
Metallicity [Fe/H]−0.03[7] dex
Rotational velocity (v sin i)13[8] km/s
Age15[4] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist
Database references
SIMBADdata

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Nu Aquilae is a supergiant star in the constellation of Aquila that lies close to the celestial equator. Its name is a Bayer designation that is Latinized from ν Aquilae, and abbreviated Nu Aql or ν Aql. It has an apparent visual magnitude of 4.72 and so is faintly visible to the naked eye. Based upon an annual parallax shift of Script error: No such module "val". (with a 10% margin of error), it is believed to lie approximately Script error: No such module "convert". from Earth.[1] The variable star NU Aquilae has a similar-looking designation but is a separate and unrelated object.

The spectrum of ν Aql A matches a stellar classification of F3, with the luminosity class of Ib indicating this is a supergiant. This is a massive star, with approximately 12.5 times the mass of the sun,[4] and it spans ~71 times the Sun's girth.[6] It is only 15[4] million years old and is radiating around 7,600 times the luminosity of the Sun.[6] The outer atmosphere has an effective temperature of 6,700 K and it has the yellow-white hue of an F-type star.[9]

ν Aql B is a magnitude 9.6 star 201 arc-seconds distant[10] with spectral classification of A1 IV/V.[11] It is not physically associated with Nu Aquilae[12] and is at about half the distance of Nu Aquilae.[13]

References

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  1. ↑ a b c d e Template:Cite Gaia DR3
  2. ↑ a b c Script error: No such module "Citation/CS1".
  3. ↑ a b Script error: No such module "Citation/CS1".
  4. ↑ a b c d e f Script error: No such module "Citation/CS1".
  5. ↑ Script error: No such module "Citation/CS1".
  6. ↑ a b c d e Template:Cite Gaia DR2
  7. ↑ Script error: No such module "Citation/CS1".
  8. ↑ Script error: No such module "Citation/CS1".
  9. ↑ Script error: No such module "Citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1".
  11. ↑ Script error: No such module "Citation/CS1".
  12. ↑ Script error: No such module "Citation/CS1".
  13. ↑ Template:Cite Gaia DR3

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External links

Template:Stars of Aquila

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