1 Trianguli

Star in the constellation Triangulum 1 Trianguli J2000.0 (ICRS) Triangulum 01 42 05.92475 +29 30 21.8431 7.520.01 main sequence star A2 V +0.06 74.5 4.5114 0.0515 −10.545 −0.288 +0.78 2.360.34 0.30 2.690.14 521.5 2.2 9,305145 192 3.90 −0.02 37123 1 Trianguli +29°220 +28°282 01762-00704 10407 7948 74880 2068 *1+Tri 1 Trianguli, also known as HD 10407, is a star located in the northern constellation Triangulum. It has an apparent magnitude of 7.52, making it readily visible in binoculars but not to the naked eye. Gaia DR3 parallax measurements imply a distance of 723 light years and it is currently receding with a heliocentric radial velocity of 7 km/s. At its current distance 1 Trianguli's brightness is diminished by a quarter of a magnitudes due to interstellar dust and it has an absolute magnitude of +0.78. Even though it has a Flamsteed designation, 1 Trianguli is one of the 220 Flamsteed stars that are not in the Yale Bright Star Catalogue. 1 Trianguli has a stellar classification of A2 V, indicating that it is an ordinary A-type main-sequence star. It has 2.36 times the mass of the Sun and 2.69 times the Sun's radius. It radiates 52 times the luminosity of the Sun from its photosphere at an effective temperature of 9305 K commas, giving it a white hue. It has a near solar metallicity at [Fe/H] = −0.02 and 1 Trianguli is estimated to be 371 million years old. References Hog E. Fabricius C. Makarov V. V. Urban S. Corbin T. Wycoff G. Bastian U. Schwekendiek P. Wicenec A. 2000-03-01 The Tycho-2 catalogue of the 2.5 million brightest stars 2000A&A...355L..27H Astronomy and Astrophysics 355 L27–L30 0004-6361 1979RA......9..479C Classification Based on 102/A/Mm Objective Prism Spectra Clausen J. V. Jensen K. S. IAU Colloq. 47: Spectral Classification of the Future 1979 9 479 Gontcharov G. A. Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system Astronomy Letters November 2006 32 11 759–771 1063-7737 1562-6873 10.1134/S1063773706110065 2006AstL...32..759G 1606.08053 119231169 302230943040223232 Anderson E. Francis Ch. XHIP: An extended hipparcos compilation Astronomy Letters May 2012 38 5 331–346 1063-7737 1562-6873 10.1134/S1063773712050015 2012AstL...38..331A 1108.4971 119257644 1 Stassun Keivan G. Oelkers Ryan J. Paegert Martin Torres Guillermo Pepper Joshua Lee Nathan De Collins Kevin Latham David W. Muirhead Philip S. Chittidi Jay Rojas-Ayala Bárbara Fleming Scott W. Rose Mark E. Tenenbaum Peter Ting Eric B. Kane Stephen R. Barclay Thomas Bean Jacob L. Brassuer C. E. Charbonneau David Ge Jian Lissauer Jack J. Mann Andrew W. McLean Brian Mullally Susan Narita Norio Plavchan Peter Ricker George R. Sasselov Dimitar Seager S. Sharma Sanjib Shiao Bernie Sozzetti Alessandro Stello Dennis Vanderspek Roland Wallace Geoff Winn Joshua N. The Revised TESS Input Catalog and Candidate Target List The Astronomical Journal 9 September 2019 158 4 138 1538-3881 10.3847/1538-3881/ab3467 2019AJ....158..138S 1905.10694 166227927 1721.1/124721 free free 1 Anders F. Khalatyan A. Queiroz A. B. A. Chiappini C. Ardèvol J. Casamiquela L. Figueras F. Jiménez-Arranz Ó. Jordi C. Monguió M. Romero-Gómez M. Altamirano D. Antoja T. Assaad R. Cantat-Gaudin T. Castro-Ginard A. Enke H. Girardi L. Guiglion G. Khan S. Luri X. Miglio A. Minchev I. Ramos P. Santiago B. X. Steinmetz M. Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5 Astronomy & Astrophysics February 2022 658 A91 0004-6361 1432-0746 10.1051/0004-6361/202142369 2022A&A...658A..91A 2111.01860 free Kervella P. Thévenin F. Di Folco E. Ségransan D. The angular sizes of dwarf stars and subgiants. Surface brightness relations calibrated by interferometry Astronomy & Astrophysics October 2004 426 1 297–307 0004-6361 1432-0746 10.1051/0004-6361:20035930 2004A&A...426..297K astro-ph/0404180 6077801 free Gontcharov G. A. Dependence of kinematics on the age of stars in the solar neighborhood Astronomy Letters December 2012 38 12 771–782 1063-7737 1562-6873 10.1134/S1063773712120031 2012AstL...38..771G 1606.08814 118345778 Gontcharov G. A. Spatial distribution and kinematics of OB stars Astronomy Letters November 2012 38 11 694–706 1063-7737 1562-6873 10.1134/S1063773712110035 2012AstL...38..694G 1606.09028 255202762 Bidelman, W. P. Flamsteed stars not contained in the Yale "Catalogue of Bright Stars" Bulletin d'Information du Centre de Donnees Stellaires December 1990 38 13 en 1169-8837 1990BICDS..38...13B Gontcharov George A. Mosenkov Aleksandr V. Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars Monthly Notices of the Royal Astronomical Society 28 September 2017 472 4 3805–3820 0035-8711 1365-2966 10.1093/mnras/stx2219 2017MNRAS.472.3805G 1709.01160 118879856 free *1 Tri March 29, 2021 Category:Triangulum Category:A2V stars Trianguli, 1 010407 007948