V1339 Aquilae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 50m 17.47943s |
| Declination | +07° 54′ 08.6934″ |
| Apparent magnitude (V) | 6.484 |
| Characteristics | |
| Spectral type | B2.5IVe |
| U−B color index | -0.7 |
| B−V color index | -0.1 |
| Variable type | Be star |
| Astrometry | |
| Radial velocity (Rv) | -30.10 ± 5 km/s |
| Proper motion (μ) | RA: -0.77 ± 0.39 mas/yr Dec.: -5.44 ± 0.46 mas/yr |
| Parallax (π) | 1.89 ± 0.45 mas |
| Distance | approx. 1,700 ly (approx. 500 pc) |
| Details | |
| Mass | 13.0[1] M☉ |
| Radius | 7.7[1] R☉ |
| Temperature | 23310[1] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
V1339 Aquilae, also known as HD 187567, is a Be star in the constellation Aquila. It is around 13 times as massive as the Sun and has 7.7 times its diameter.[1]
Its binary nature was discovered by speckle interferometry.
References
- 1 2 3 4 Catanzaro, G. (2013). "Spectroscopic atlas of Hα and Hβ in a sample of northern Be stars". Astronomy & Astrophysics. 550: 18. arXiv:1212.6608
. Bibcode:2013A&A...550A..79C. doi:10.1051/0004-6361/201220357. A79.
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