10 Delphini

K-type star in the constellation Delphinus 10 Delphini J2000.0 (ICRS) Delphinus 20 41 16.2079 +14 34 58.361 6.000.01 red giant branch K4 III +1.24 +1.44 −322 6.6178 0.0397 −9.462 −0.344 +0.06 2.420.71 18.471.02 1.03 1252 2.27 0.00 4,378 79433 10 Del 197121 102080 7918 28826 +14°2269 +14°4393 106384 10+Del 10 Delphini (10 Del) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 6.00, allowing it to be faintly seen with the naked eye. Parallax measurements put the object at a distance of 493 light years but is drifting closer with a heliocentric radial velocity of -32 km/s. 10 Delphini has a stellar classification of K4 III or K2 III, both indicating that it is a red giant. However, there is some uncertainty behind the first classification. It has twice the mass of the Sun but at an age of 794 million years — expanded to 18 times the radius of the Sun. It shines at 125 solar luminosity from its enlarged photosphere at an effective temperature of 4,378 K, giving it an orange glow. 10 Del has a solar metallicity. 10 Del has been suspected to be a variable star, although it hasn't been catalogued as such in the GCVS. References 1762381079059254400 1762381079059254400 Høg E. Fabricius C. Makarov V. V. Urban S. Corbin T. Wycoff G. Bastian U. Schwekendiek P. Wicenec A. The Tycho-2 catalogue of the 2.5 million brightest stars Astronomy and Astrophysics March 2000 355 L27–L30 0004-6361 2000A&A...355L..27H Haggkvist L. Oja T. Results of BV photometry 1969-70 (Uppsala refractor) Private Communication 1970 1970Priv.........0H Paunzen E. Catalogue of stars measured in the Geneva seven-colour photometric system Astronomy & Astrophysics May 2022 661 A89 0004-6361 1432-0746 10.1051/0004-6361/202142355 2022A&A...661A..89P free 2111.04810 Adams Walter S. Joy Alfred H. Humason Milton L. Brayton Ada Margaret The Spectroscopic Absolute Magnitudes and Parallaxes of 4179 Stars The Astrophysical Journal 81 0004-637X 10.1086/143628 1935ApJ....81..187A April 1935 187 free 2005A&A...430..165F Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters Astronomy and Astrophysics 430 165 Famaey B. Jorissen A. Luri X. Mayor M. Udry S. Dejonghe H. Turon C. 2005 10.1051/0004-6361:20041272 astro-ph/0409579 17804304 Anderson E. Francis Ch. XHIP: An extended hipparcos compilation Astronomy Letters May 2012 38 5 331–346 10.1134/S1063773712050015 en 1063-7737 2012AstL...38..331A 1108.4971 255204555 Forsberg R. Jönsson H. Ryde N. Matteucci F. Abundances of disk and bulge giants from high-resolution optical spectra Astronomy & Astrophysics November 2019 631 A113 0004-6361 1432-0746 10.1051/0004-6361/201936343 2019A&A...631A.113F 1909.10535 free Feuillet Diane K. Bovy Jo Holtzman Jon Girardi Léo MacDonald Nick Majewski Steven R. Nidever David L. Determining Ages of Apogee Giants with Known Distances The Astrophysical Journal 20 January 2016 817 1 40 1538-4357 10.3847/0004-637X/817/1/40 2016ApJ...817...40F 1511.04088 free Samus’ N. N. Kazarovets E. V. Durlevich O. V. Kireeva N. N. Pastukhova E. N. General catalogue of variable stars: Version GCVS 5.1 Astronomy Reports January 2017 61 1 80–88 10.1134/S1063772917010085 1063-7729 2017ARep...61...80S 255195566 Bartkevicius A. Lazauskaite R. Classification of Population II Stars in the Vilnius Photometric System. II. Results Open Astronomy 1 January 1997 6 4 499 2543-6376 10.1515/astro-1997-0402 1997BaltA...6..499B free Category:Delphinus Category:K-type giants 197121 102080 7918 +14 4393 Delphini, 10