| |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h23m 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] |
| Distance | 6,000[5] pc |
| Details | |
| Mass | 25[5] M☉ |
| Radius | 48 - 145[6] R☉ |
| Luminosity | 562,000[5] L☉ |
| Temperature | 13,213[5] K |
| Age | 2.3 (3-6)[7] Myr |
| Other designations | |
LS1, 2MASS J19234764+1436391 | |
| Database references | |
| SIMBAD | data |
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]
V1936 Aquilae is a very luminous star. Recent measurements hint at a bolometric luminosity of around 560,000 L☉, assuming a distance of 6 kiloparsecs, consistent with the distance of Westerhout 51, the very large H II region (nebula) it is located in. The star likely has a temperature of around 13,200 K.[5] The Stefan-Boltzmann Law suggests a radius of around 143 times that of the Sun.
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