Gamma Aquilae
From Wikipedia, the free encyclopedia
| 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
- Gamma Aquilae in fiction
- http://www.alcyone.de/cgi-bin/search.pl?object=HR7525
- http://www.uma.pt/Investigacao/Astro/Grupo/Sextas_astronomicas/Sexta8/sexta8.htm
- http://www.constellationsofwords.com/stars/Tarazed.html
- http://www.scenta.co.uk/tcaep/nonxml/astronomy/constellations/19460060.htm
- http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=HR&HR=7525

