| absmag_v = +2.24[11]
}}{{Starbox detail
| mass =
| radius =
| luminosity = 10.5[11]
| temperature = 7,906[3]
| metal_fe = –0.05[3]
| gravity = 4.21[3]
| rotational_velocity = 42[16]
| age_myr =
}}{{Starbox catalog
| names = υ Aql, 49 Aquilae, BD+07° 4210, HD 186689, HIP 97229, HR 7519, SAO 125032.[17]
}}{{Starbox reference
|Simbad=ups+Aql
}}{{Starbox end}}Upsilon Aquilae, Latinized from υ Aquilae, is the Bayer designation for a star in the equatorial constellation of Aquila. With an apparent visual magnitude of +5.91[5] it is a faint star but visible to the naked eye from suburban skies. It has an annual parallax shift of 18.65 milliarcsecond,[ indicating a distance of around {{Convert|175|ly|pc|abbr=off|lk=on}}.]
Upsilon Aquilae is a subgiant star with a stellar classification of A3 IV.[4] The outer atmosphere is radiating energy into space with 10.5[11] times the Sun's luminosity at an effective temperature of 7,906 K,[3] which gives it the white-hot glow of an A-type star. It is spinning relatively quickly with a projected rotational velocity of 42 km/s.[16]
References
1. ^1 2 3 {{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }}
2. ^1 2 {{citation | display-authors=1 | last1=Cowley | first1=A. | last2=Cowley | first2=C. | last3=Jaschek | first3=M. | last4=Jaschek | first4=C. | title=A study of the bright A stars. I. A catalogue of spectral classifications | journal=Astronomical Journal | volume=74 | pages=375–406 |date=April 1969 | doi=10.1086/110819 | bibcode=1969AJ.....74..375C | postscript=. }}
3. ^1 {{citation | last=Wilson | first=Ralph Elmer | year=1953 | title=General catalogue of stellar radial velocities | journal=Washington | pages=0 | publisher=Carnegie Institution of Washington | bibcode=1953GCRV..C......0W | postscript=. }}
4. ^1 2 {{citation | last1=Royer | first1=F. | last2=Zorec | first2=J. | last3=Gómez | first3=A. E. | title=Rotational velocities of A-type stars. III. Velocity distributions | journal=Astronomy and Astrophysics | volume=463 | issue=2 | pages=671–682 |date=February 2007 | doi=10.1051/0004-6361:20065224 | bibcode=2007A&A...463..671R | arxiv=astro-ph/0610785 | postscript=. }}
5. ^1 2 3 {{citation | display-authors=1 | last1=Johnson | first1=H. L. | last2=Iriarte | first2=B. | last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z. | title=UBVRIJKL photometry of the bright stars | journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | pages=99 | year=1966 | bibcode=1966CoLPL...4...99J | postscript=. }}
6. ^1 2 3 4 5 {{citation | display-authors=1 | last1=Soubiran | first1=C. | last2=Le Campion | first2=J.-F. | last3=Cayrel de Strobel | first3=G. | last4=Caillo | first4=A. | title=The PASTEL catalogue of stellar parameters | journal=Astronomy and Astrophysics | volume=515 | page=A111 |date=June 2010 | doi=10.1051/0004-6361/201014247 | bibcode=2010A&A...515A.111S | postscript=. |arxiv = 1004.1069 }}
7. ^1 {{cite simbad | title=* ups Aql | accessdate=2012-07-21 | postscript=. }}