Gamma Aquilae
Star in the constellation Aquila / From Wikipedia, the free encyclopedia
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Gamma Aquilae, Latinized from γ Aquilae, and formally known as Tarazed /ˈtærəzɛd/,[10] is a star in the constellation of Aquila. It has an apparent visual magnitude of 2.712,[2] making it readily visible to the naked eye at night. Parallax measurements place it at a distance of 395 light-years (121 parsecs) from the Sun.[1]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquila |
Right ascension | 19h 46m 15.58029s[1] |
Declination | +10° 36′ 47.7408″[1] |
Apparent magnitude (V) | 2.712[2] |
Characteristics | |
Spectral type | K3 II[3] |
U−B color index | +1.720[2] |
B−V color index | +1.500[2] |
Astrometry | |
Radial velocity (Rv) | −2.79[4] km/s |
Proper motion (μ) | RA: +16.99[1] mas/yr Dec.: −2.98[1] mas/yr |
Parallax (π) | 8.26 ± 0.17 mas[1] |
Distance | 395 ± 8 ly (121 ± 2 pc) |
Absolute magnitude (MV) | −3.38+0.24 −0.22[5] |
Details[6] | |
Mass | 3.51±0.23 M☉ |
Radius | 91.81+2.19 −2.12 R☉ |
Luminosity | 2,146±139 L☉ |
Surface gravity (log g) | 1.52 cgs |
Temperature | 4,098±56 K |
Metallicity [Fe/H] | –0.29[7] dex |
Rotational velocity (v sin i) | 8[8] km/s |
Age | 270±40 Myr |
Other designations | |
Database references | |
SIMBAD | data |
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