12 Aquilae

Star in the constellation Aquila i Aquilae iota Aquilaeι Aquilae 71 Aquilael Aquilae Aquila constellation map.svg center 280 right Red circle.svg 10 12 Aquilae 778 742 Location of 12 Aquilae (circled) J2000 19 01 40.82887 -05 44 20.7222 4.02 Aquila K1 III 0.54 +1.104 +1.04 -43.92 0.18 -22.592 -43.08 21.5669 0.2199 0.726 1.185 0.282 12.28 0.14 58.2 3.1 4662 59 commas -0.08 0.07 2.31 0.11 3.6 3.64 1.43 i Aquilae, BD−05°4840, HD 176678, HIP 93429, HR 7193, SAO 142931 12+Aql 12 Aquilae (abbreviated 12 Aql) is a star in the equatorial constellation of Aquila. 12 Aquilae has the Bayer designation of i Aquilae and is most easily recognized in the sky being next to the brighter star λ (lambda) Aquilae. In Chinese, zh 天弁 (zh-Latn Tiān Biàn), meaning Market Officer, refers to an asterism consisting of 12 Aquilae, α Scuti, δ Scuti, ε Scuti, β Scuti, η Scuti, λ Aquilae, 15 Aquilae and 14 Aquilae.zh 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, 978-986-7332-25-7. Consequently, 12 Aquilae itself is known as zh 天弁六 (zh-Latn Tiān Biàn liù, en the Sixth Star of Market Officer.) This star has an apparent visual magnitude of 4.02, which is bright enough to be seen with the naked eye, although, according to the Bortle Dark-Sky Scale, it is a challenge to view from the inner city. Based upon an annual parallax shift of 21.57 mas, the distance to this star is 151 ly pc off on with a margin of error of one light-year. This is an evolved giant star of stellar class K1 III. It has 12 times the radius of the Sun and shines with 58 times the Sun's luminosity. This energy is being radiated from its outer atmosphere at an effective temperature of 4,662 K, giving it the cool orange hue of a K-type star. References 4254220979971917056 1 Massarotti Alessandro Latham David W. Stefanik Robert P. Fogel Jeffrey Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity The Astronomical Journal 135 1 209–231 10.1088/0004-6256/135/1/209 2008AJ....135..209M . January 2008 121883397 free 1 Johnson H. L. Iriarte B. Mitchell R. I. Wisniewskj W. Z. UBVRIJKL photometry of the bright stars Communications of the Lunar and Planetary Laboratory 4 99 1966 99 1966CoLPL...4...99J . 2018AJ....155...30B Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer Baines Ellyn K. Armstrong J. Thomas Schmitt Henrique R. Zavala R. T. Benson James A. Hutter Donald J. Tycner Christopher Van Belle Gerard T. The Astronomical Journal 2018 155 1 30 10.3847/1538-3881/aa9d8b 1712.08109 119427037 . free Soubiran C. Creevey O. L. Lagarde N. Brouillet N. Jofré P. Casamiquela L. Heiter U. Aguilera-Gómez C. Vitali S. Worley C. de Brito Silva D. 2024-02-01 Gaia FGK benchmark stars: Fundamental Teff and log g of the third version 2024A&A...682A.145S Astronomy and Astrophysics 682 A145 10.1051/0004-6361/202347136 0004-6361 12 Aquilae's database entry at VizieR. 1 Soubiran C. Bienaymé O. Mishenina T. V. Kovtyukh V. V. Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants Astronomy and Astrophysics 2008 480 1 91–101 2008A&A...480...91S 10.1051/0004-6361:20078788 . 0712.1370 16602121 The Spectra of the Bright Stars of Types F5-K5 Roman Nancy G. Astrophysical Journal 116 122 10.1086/145598 1952ApJ...116..122R . July 1952 free i Aql 2012-07-22 . cs2 The Colour of Stars December 21, 2004 Australia Telescope, Outreach and Education Commonwealth Scientific and Industrial Research Organisation http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html 2012-01-16 . dead https://web.archive.org/web/20120222183238/http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html February 22, 2012 External links The Constellations and Named Stars Image 12 Aquilae HR 7193 Aquilae, i 176678 Category:Aquila (constellation) Category:Suspected variables Category:K1III stars 093429 Aquilae, 12 7193 Category:Durchmusterung objects