12 Aquilae
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 01m 40.8272s |
| Declination | -05° 44′ 20.814″ |
| Apparent magnitude (V) | 4.027 |
| Characteristics | |
| Spectral type | K1III |
| U-B color index | 1.09 |
| B-V color index | 1.09 |
| R-I color index | 0.54 |
| Variable type | Variable star |
| Astrometry | |
| Radial velocity (Rv) | -43.9 km/s |
| Proper motion (μ) | RA: -24.15 mas/yr Dec.: -39.73 mas/yr |
| Parallax (π) | 21.95 ± 0.92 mas |
| Distance | 149 ± 6 ly (46 ± 2 pc) |
| Absolute magnitude (MV) | 5.133 |
| Details | |
| Mass | 0,8 M☉ |
| Radius | 0,9 R☉ |
| Luminosity | 0,4 L☉ |
| Temperature | 3,500–5,000 K |
| Metallicity | ? |
| Rotation | < 17 km/s 0,007348 Year |
| Age | ? years |
| Other designations | |
|
ZI 1577, GSC 05140-04781, 2MASS J19014083-0544209, TD1 23702, HD 176678, NSV 11655, TYC 5140-4781-1, i Aql, HIC 93429, PLX 4414, UBV M 23405, BD-05° 4840, HIP 93429, PPM 202441, UBV 16146, CSV 101794, HR 7193, RAFGL 2302, YZ 95 6515, GC 26141, IRAS 18589-0548, ROT 2705, YZ 0 4050, GCRV 11472, IRC -10483, SAO 142931, JP11 3061.
|
|
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
12 Aquilae (12 Aql) or i Aquilae (i Aql) is a fourth-magnitude star in the constellation Aquila. It carries the very seldom used Hebrew name Bered, from בָּרָד barad "hail(storm)".
12 Aquilae is a star varying in both magnitude and spectral type. Its apparent magnitude is 4.02. 12 Aquilae is located about 150 light-years from Earth.
[edit] References
- "HD 176678 -- Variable Star". SIMBAD Astronomical Database. http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=12+aquilae&NbIdent=1&Radius=10&Radius.unit=arcmin&CooFrame=FK5&CooEpoch=2000&CooEqui=2000&output.max=all&o.catall=on&output.mesdisp=N&Bibyear1=1983&Bibyear2=2005&Frame1=FK5&Frame2=FK4&Frame3=G&Equi1=2000.0&Equi2=1950.0&Equi3=2000.0&Epoch1=2000.0&Epoch2=1950.0&Epoch3=2000.0. Retrieved 2007-01-21.
[edit] External links
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