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11 Aquilae
Observation data; Epoch J2000 Equinox J2000
Constellation	Aquila
Right ascension	18h 59m 05.73920s
Declination	+13° 37′ 20.0725″
Apparent magnitude (V)	5.220
Characteristics
Spectral type	F8 V
U−B color index	+0.07
B−V color index	+0.53
R−I color index	0.3
Astrometry
Radial velocity (Rv)	+13.6 km/s
Proper motion (μ)	RA: +14.475 mas/yr ; Dec.: –124.382 mas/yr
Parallax (π)	20.9187 ± 0.1107 mas
Distance	155.9 ± 0.8 ly ; (47.8 ± 0.3 pc)
Absolute magnitude (MV)	2.96
Details
Radius	3.49+0.10; −0.11 R☉
Luminosity	15.4±0.1 L☉
Surface gravity (log g)	3.94 cgs
Temperature	6,118+94; −89 K
Metallicity [Fe/H]	–0.07 dex
Rotational velocity (v sin i)	24.6±0.7 km/s
Age	1.5 Gyr
Other designations
	BD+13°3841, HD 176303, HIP 93203, HR 7172, SAO 104308
Database references
SIMBAD	data

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]

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]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ ^a ^b ^c ^d Holmberg, J.; Nordstrom, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511.
^ ^a ^b Eggen, O. J. (1962), "Space-velocity vectors for 3483 stars with proper motion and radial velocity", Royal Observatory Bulletin, 51: 79, Bibcode:1962RGOB...51...79E.
^ ^a ^b Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N.
^ ^a ^b ^c Balachandran, Suchitra (May 1, 1990), "Lithium depletion and rotation in main-sequence stars", Astrophysical Journal, Part 1, 354: 310–332, Bibcode:1990ApJ...354..310B, doi:10.1086/168691.
^ Reiners, Ansgar; Schmitt, Jürgen H. M. M. (February 2003), "Rotation and differential rotation in field F- and G-type stars", Astronomy and Astrophysics, 398 (2): 647–661, Bibcode:2003A&A...398..647R, doi:10.1051/0004-6361:20021642.
^ "* 11 Aql", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2012-07-26.
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
^ van Belle, G. T.; et al. (May 2008), "The Palomar Testbed Interferometer Calibrator Catalog", The Astrophysical Journal Supplement Series, 176 (1): 276–292, arXiv:0711.4194, Bibcode:2008ApJS..176..276V, doi:10.1086/526548, S2CID 10713221.
^ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on February 22, 2012, retrieved 2012-01-16.
^ King, Jeremy R.; et al. (April 2003), "Stellar Kinematic Groups. II. A Reexamination of the Membership, Activity, and Age of the Ursa Major Group", The Astronomical Journal, 125 (4): 1980–2017, Bibcode:2003AJ....125.1980K, doi:10.1086/368241.