Gamma Aquilae

γ Aquilae
Location of γ Aquilae (circled)
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]
Distance395 ± 8 ly
(121 ± 2 pc)
Absolute magnitude (MV)−3.38+0.24
−0.22[5]
Details[6]
Mass3.51±0.23 M☉
Radius91.81+2.19
−2.12 R☉
Luminosity2,146±139 L☉
Surface gravity (log g)1.52 cgs
Temperature4,098±56 K
Metallicity [Fe/H]–0.29[7] dex
Rotational velocity (v sin i)8[8] km/s
Age270±40 Myr
Other designations
Tarazed, Reda, gam Aql, γ Aql, 50 Aql, BD+10 4043, FK5 741, HD 186791, HIP 97278, HR 7525, SAO 105223[9]
Database references
SIMBADdata

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]

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  10. ^ "IAU Catalog of Star Names". Retrieved 28 July 2016.