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Omega2 Aquilae information


For other star systems with this Bayer designation, see ω Aquilae.
ω2 Aquilae
Location of ω2 Aquilae (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aquila
Right ascension 19h 19m 53.06713s[1]
Declination +11° 32′ 05.8722″[1]
Apparent magnitude (V) 6.03[2]
Characteristics
Spectral type A2 V[3] or F0V[2]
U−B color index +0.087±0.007[2]
B−V color index +0.08[4]
Astrometry
Radial velocity (Rv)−26.0±4.3[5][2] km/s
Proper motion (μ) RA: 44.042[1] mas/yr
Dec.: 22.393[1] mas/yr
Parallax (π)11.7035 ± 0.0703 mas[1]
Distance279 ± 2 ly
(85.4 ± 0.5 pc)
Absolute magnitude (MV)1.48[2]
Details
Mass2.01[6] M☉
Radius2.0[7] R☉
Luminosity22[2] L☉
Temperature8,936[8] K
Rotational velocity (v sin i)154[9] km/s
Age224[6] Myr
Other designations
ω2 Aql, 29 Aquilae, BD+11°3802, GC 26660, HD 181383, HIP 95002, HR 7332, SAO 104728[10]
Database references
SIMBADdata

Omega2 Aquilae, Latinized from ω2 Aquilae, is the Bayer designation for a star in the equatorial constellation of Aquila, the eagle.[10] It has an apparent visual magnitude of 6.0,[2] which is close to the lower limit of detectability with the naked eye. According to the Bortle Dark-Sky Scale, this star can be viewed from dark rural skies. As the Earth orbits about the Sun, this star undergoes a parallax shift of 11.7 mas.[1] This is equivalent to a physical distance of 279 light-years (86 parsecs) from Earth, give or take a 2 light year margin of error. The star is drifting closer to the Sun with a radial velocity of −26 km/s.[2]

Analysis of the spectrum of this white-hued star shows it to match a stellar classification of A2 V,[3] indicating it is an A-type main sequence star. It has about double the size and mass of the Sun.[7] The star is radiating 22[2] times the luminosity of the Sun from its photosphere at an effective temperature of 8,936 K,[8] giving it the white hue of an A-type star.[11] Omega2 Aquilae is 224[6] million years old and is spinning rapidly with a projected rotational velocity of 154 km/s.[9]

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  2. ^ a b c d e f g h i Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference aj74_375 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference atao7_209 was invoked but never defined (see the help page).
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  6. ^ a b c Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference aaa367_521 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference aaa515_A11 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference aaa463_2_671 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference csiro was invoked but never defined (see the help page).

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Omega2 Aquilae

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Omega2 Aquilae, Latinized from ω2 Aquilae, is the Bayer designation for a star in the equatorial constellation of Aquila, the eagle. It has an apparent...

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