Star in the constellation Triangulum
1 Trianguli , also known asHD 10407 , is astar located in the northernconstellation Triangulum . It has anapparent magnitude of 7.52,[ 2] binoculars but not to thenaked eye .Gaia DR3 parallax measurements imply a distance of 723light years [ 1] radial velocity ofkm/s [ 4] magnitudes due tointerstellar dust [ 12] absolute magnitude of +0.78.[ 5] Flamsteed designation , 1 Trianguli is one of the 220 Flamsteed stars that are not in theYale Bright Star Catalogue .[ 13]
1 Trianguli has astellar classification of A2 V,[ 3] A-type main-sequence star . It has 2.36 times themass of the Sun [ 6] Sun's radius .[ 7] luminosity of the Sun [ 1] photosphere at aneffective temperature ofK [ 6] metallicity at [Fe/H] = −0.02[ 8] million years old.[ 9] [ 10]
^a b c d e f g h Vallenari, A.; et al. (Gaia collaboration) (2023)."Gaia Data Release 3. Summary of the content and survey properties" .Astronomy and Astrophysics .674 : A1.arXiv :2208.00211 Bibcode :2023A&A...674A...1G .doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source atVizieR .^a b c 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".Astronomy and Astrophysics .355 :L27– L30.Bibcode :2000A&A...355L..27H .ISSN 0004-6361 . ^a b Clausen, J. V.; Jensen, K. S. (1979). "Classification Based on 102/A/Mm Objective Prism Spectra".IAU Colloq. 47: Spectral Classification of the Future .9 : 479.Bibcode :1979RA......9..479C . ^a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system".Astronomy Letters .32 (11):759– 771.arXiv :1606.08053 Bibcode :2006AstL...32..759G .doi :10.1134/S1063773706110065 .eISSN 1562-6873 .ISSN 1063-7737 .S2CID 119231169 . ^a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation".Astronomy Letters .38 (5):331– 346.arXiv :1108.4971 Bibcode :2012AstL...38..331A .doi :10.1134/S1063773712050015 .eISSN 1562-6873 .ISSN 1063-7737 .S2CID 119257644 . ^a b c d Stassun, Keivan G.; et al. (9 September 2019)."The RevisedTESS Input Catalog and Candidate Target List" .The Astronomical Journal .158 (4): 138.arXiv :1905.10694 Bibcode :2019AJ....158..138S .doi :10.3847/1538-3881/ab3467 eISSN 1538-3881 .hdl :1721.1/124721 S2CID 166227927 . ^a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004)."The angular sizes of dwarf stars and subgiants. Surface brightness relations calibrated by interferometry" .Astronomy & Astrophysics .426 (1):297– 307.arXiv :astro-ph/0404180 Bibcode :2004A&A...426..297K .doi :10.1051/0004-6361:20035930 eISSN 1432-0746 .ISSN 0004-6361 .S2CID 6077801 . ^a b c Anders, F.; et al. (February 2022)."Photo-astrometric distances, extinctions, and astrophysical parameters forGaia EDR3 stars brighter thanG = 18.5" .Astronomy & Astrophysics .658 : A91.arXiv :2111.01860 Bibcode :2022A&A...658A..91A .doi :10.1051/0004-6361/202142369 eISSN 1432-0746 .ISSN 0004-6361 . ^a b Gontcharov, G. A. (December 2012). "Dependence of kinematics on the age of stars in the solar neighborhood".Astronomy Letters .38 (12):771– 782.arXiv :1606.08814 Bibcode :2012AstL...38..771G .doi :10.1134/S1063773712120031 .eISSN 1562-6873 .ISSN 1063-7737 .S2CID 118345778 . ^a b Gontcharov, G. A. (November 2012). "Spatial distribution and kinematics of OB stars".Astronomy Letters .38 (11):694– 706.arXiv :1606.09028 Bibcode :2012AstL...38..694G .doi :10.1134/S1063773712110035 .eISSN 1562-6873 .ISSN 1063-7737 .S2CID 255202762 . ^ "*1 Tri" .SIMBAD Centre de données astronomiques de Strasbourg . RetrievedMarch 29, 2021 .^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017)."Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars" .Monthly Notices of the Royal Astronomical Society .472 (4):3805– 3820.arXiv :1709.01160 Bibcode :2017MNRAS.472.3805G .doi :10.1093/mnras/stx2219 eISSN 1365-2966 .ISSN 0035-8711 .S2CID 118879856 . ^ Bidelman, W. P. (December 1990). "Flamsteed stars not contained in the Yale "Catalogue of Bright Stars"Bulletin d'Information du Centre de Donnees Stellaires .38 : 13.Bibcode :1990BICDS..38...13B .ISSN 1169-8837 .
