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Star in the constellation Aquila From Wikipedia, the free encyclopedia
11 Aquilae (abbreviated 11 Aql) is a single[8] star in the equatorial constellation of Aquila. 11 Aquilae is the Flamsteed designation. It has an apparent visual magnitude of 5.2,[2] which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 20.9 mas,[1] the distance to this star is approximately 156 light-years (48 parsecs). The brightness of this star is diminished by 0.33 in magnitude because of extinction from interstellar gas and dust.[9]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquila |
Right ascension | 18h 59m 05.73920s[1] |
Declination | +13° 37′ 20.0725″[1] |
Apparent magnitude (V) | 5.220[2] |
Characteristics | |
Spectral type | F8 V[3] |
U−B color index | +0.07[4] |
B−V color index | +0.53[4] |
R−I color index | 0.3 |
Astrometry | |
Radial velocity (Rv) | +13.6[2] km/s |
Proper motion (μ) | RA: +14.475[1] mas/yr Dec.: –124.382[1] mas/yr |
Parallax (π) | 20.9187 ± 0.1107 mas[1] |
Distance | 155.9 ± 0.8 ly (47.8 ± 0.3 pc) |
Absolute magnitude (MV) | 2.96[5] |
Details | |
Radius | 3.49+0.10 −0.11[1] R☉ |
Luminosity | 15.4±0.1[1] L☉ |
Surface gravity (log g) | 3.94[5] cgs |
Temperature | 6,118+94 −89[1] K |
Metallicity [Fe/H] | –0.07[5] dex |
Rotational velocity (v sin i) | 24.6±0.7[6] km/s |
Age | 1.5[2] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
This is an F-type main sequence star with a stellar classification of F8 V.[3] It is radiating about 15.4 times the luminosity of the Sun from its outer atmosphere at an effective temperature of 6,118 K,[1] giving it the yellow-white glow of an F-type star.[10] 11 Aquilae has been listed as a candidate for membership in the Ursa Major Moving Group, but most likely does not belong to that association.[11]