13 Trianguli

Star in the constellation Triangulum Triangulum constellation map.svg center 280 right Red circle.svg 10 13 Trianguli 353 515 Location of 13 Trianguli (circled) J2000 Triangulum 02 28 48.49449 +29 55 54.3286 5.89 G0 V +0.591 0.014 +0.01 +40.8 –66.071 +71.499 31.7031 0.1014 3.45 1.10 0.03 1.86 0.03 −0.24 5,846 3.72 3 6.45 13 Tri +29 423 99.1 15335 11548 720 75391 13+Tri 13 Trianguli is the Flamsteed designation for a star in the northern constellation of Triangulum. It has an apparent visual magnitude of 5.89, so according to the Bortle scale it is faintly visible from dark suburban skies. The star is located at a distance of 103 light years from the Sun based on parallax measurements, and is drifting further away with a radial velocity of +41 km/s. It made a close approach to the Sun some 665,000 years ago at an estimated separation of 10.52 pc ly out off. A stellar classification of G0 V indicates this is a main sequence star that is generating energy by fusing hydrogen into helium at its core. It has about 110% of the Sun's mass, 186% of the Sun's radius, and shines with 3.72 times the luminosity of the Sun. The stellar atmosphere has an effective temperature of 5,846 K, giving it the yellow hue of a G-type star. It appears to be older than the Sun, with an estimated age of 6.45 billion years. In 1994, an astrometric companion was reported at an angular separation of 0.020″. However, follow-up observations reported in 2005 not only failed to recover this object but also returned a null result on a search for planetary companions. The star has been examined for an infrared excess that could indicate the presence of an orbiting debris disk, but no such excess was found. References 131483276941461888 Anderson E. Francis Ch. XHIP: An extended hipparcos compilation Astronomy Letters 38 5 331 2012 2012AstL...38..331A 1108.4971 10.1134/S1063773712050015 119257644 . Takeda Yoichi Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database Publications of the Astronomical Society of Japan 59 2 335–356 April 2007 2007PASJ...59..335T . 10.1093/pasj/59.2.335 free 1 Nordström B. Mayor M. Andersen J. Holmberg J. Pont F. Jørgensen B. R. Olsen E. H. Udry S. Mowlavi N. The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14,000 F and G dwarfs Astronomy and Astrophysics 418 3 989–1019 May 2004 10.1051/0004-6361:20035959 2004A&A...418..989N astro-ph/0405198 11027621 . 1 Takeda Yoichi Sato Bun'ei Kambe Eiji Masuda Seiji Izumiura Hideyuki Watanabe Etsuji Ohkubo Michiko Yanagisawa Kenshi Yasaka Yoshiro High-Dispersion Spectra Collection of Nearby F--K Stars at Okayama Astrophysical Observatory: A Basis for Spectroscopic Abundance Standards Publications of the Astronomical Society of Japan 57 1 13–25 February 2005 2005PASJ...57...13T . 10.1093/pasj/57.1.13 1 Maldonado J. Eiroa C. Villaver E. Montesinos B. Mora A. Metallicity of solar-type stars with debris discs and planets Astronomy & Astrophysics May 2012 541 A40 1202.5884 2012A&A...541A..40M 10.1051/0004-6361/201218800 46328823 1 van Belle G. T. van Belle G. Creech-Eakman M. J. Coyne J. Boden A. F. Akeson R. L. Ciardi D. R. Rykoski K. M. Thompson R. R. Lane B. F. PTI Collaboration The Palomar Testbed Interferometer Calibrator Catalog The Astrophysical Journal Supplement Series May 2008 176 1 276–292 0711.4194 2008ApJS..176..276V 10.1086/526548 10713221 13 Tri -- Star SIMBAD Astronomical Database Centre de Données astronomiques de Strasbourg http://simbad.u-strasbg.fr/simbad/sim-id?Ident=13+Trianguli 2013-10-13 . 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/20120318151427/http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html March 18, 2012 02 28 48.49 + 29 55 54.33 Category:Triangulum Trianguli, 13 015548 0720 015335 Category:Durchmusterung objects Category:Gliese and GJ objects Category:G0V stars