Gamma Aquilae

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γ Aquilae
Observation data
Epoch J2000
Constellation
(pronunciation)
Aquila
Right ascension 19h 46m 15.5795s
Declination +10° 36′ 47.74″
Apparent magnitude (V) 2.724
Characteristics
Spectral type K3II
U-B color index 1.68
B-V color index 1.52
Astrometry
Radial velocity (Rv) -2.1 km/s
Proper motion (μ) RA: 15.72 mas/yr
Dec.: -3.08 mas/yr
Parallax (π) 7.08 ± 0.75 mas
Distance approx. 460 ly
(approx. 140 pc)
Absolute magnitude (MV) -4.278
Details
Radius 130 R
Luminosity 1,900 L
Temperature 3,350 K
Metallicity ?
Rotation ?
Age ? years
Visual binary orbit
Companion γ Aquilae B
Semimajor axis (a) 132.6"
Inclination (i) 258°
Other designations
TARAZED, 2MASS J19461557+1036475, SRS 30741, * 50 Aql, GSC 01061-02577, N30 4372, TD1 25398,* gam Aql, HD 186791, NSV 24880, TYC 1061-2577-1, AG+10° 2518, HIC 97278, PLX 4645, UBV 16822, BD+10° 4043, HIP 97278, PMC 90-93 527, UBV M 24125, CCDM J19462+1037A, HR 7525, PPM 136931, uvby98 100186791, CSI+10° 4043 1, IDS 19415+1022 A, RAFGL 2453, YZ 10° 7453, FK5 741, IRAS 19438+1029, ROT 2845, GC 27354, IRC +10439, SAO 105223, GCRV 12137, JP11 3130.
Database references
SIMBAD data

Gamma Aquilae or TARAZED (γ Aql / γ Aquilae) is a star in the constellation Aquila. It also has the traditional name Tarazed, which is derived from Persian term شاهين ترازو šāhin tarāzu meaning "the beam of the scale", referring to an asterism of α, β and γ Aquillae.

It has an apparent magnitude of 2.72 and is of spectral class K3. It is a giant star with a diameter of approximately half an AU, and its angular diameter can be detected and measured to be 0.0075 arcseconds. It is approximately 461 light years from Earth.

[edit] Location

The star's location in the constellation of Aquila is shown in the following map:

[edit] Components

NAME Right ascension Declination Apparent magnitude (V) Database references
γ Aquilae B (BD+10 4043B) 19h 46m 06.6s +10° 36' 19 10.8 Simbad

[edit] See also