V1936 Aquilae

V1936 Aquilae

A visual band light curve for V1936 Aquilae, plotted from ASAS-SN data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 23m 47.64119s[2]
Declination 14° 36′ 39.0612″[2]
Apparent magnitude (V) 15.1
Characteristics
Evolutionary stage Blue supergiant
Spectral type O4I[3]
Variable type cLBV[4]
Astrometry
Proper motion (μ) RA: +6.500[2] mas/yr
Dec.: −55.796[2] mas/yr
Parallax (π)0.1462 ± 0.0.598 mas[2]
Distance6,000[5] pc
Details
Mass25[5] M☉
Radius48 - 145[6] R☉
Luminosity562,000[5] L☉
Temperature13,213[5] K
Age2.3 (3-6)[7] Myr
Other designations
LS1, 2MASS J19234764+1436391
Database references
SIMBADdata

V1936 Aquilae is a blue supergiant and candidate Luminous blue variable located in the nebula Westerhout 51, in the constellation Aquila, about 20,000 light years away. The star was originally identified as a massive star in 2000,[3] and was thought to be an O-type supergiant. However, subsequent analyses have shown it to be not O but B-type,[5] as well as being possibly an LBV.[4]

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  2. ^ a b c d e Cite error: The named reference gaia was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference okumura was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference smith was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference bik was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference clark2009 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference lim2019 was invoked but never defined (see the help page).