K-type star in the constellation Delphinus
10 Delphini (10 Del) is a solitarystar in the equatorialconstellation Delphinus . It has anapparent magnitude of 6.00, allowing it to be faintly seen with thenaked eye .Parallax measurements put the object at a distance of 493light years but is drifting closer with a heliocentricradial velocity ofkm/s
10 Delphini has astellar classification of K4 III[ 3] [ 11] red giant . However, there is some uncertainty behind the first classification. It has twice themass of the Sun [ 8] million years [ 8] radius of the Sun .[ 9] L ☉ [ 9] photosphere at aneffective temperature of 4,378K ,[ 10] metallicity .[ 10]
10 Del has been suspected to be a variable star, although it hasn't been catalogued as such in the GCVS.[ 12]
^a b c d e 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 .^ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "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 Adams, Walter S.; Joy, Alfred H.; Humason, Milton L.; Brayton, Ada Margaret (April 1935)."The Spectroscopic Absolute Magnitudes and Parallaxes of 4179 Stars" .The Astrophysical Journal .81 : 187.Bibcode :1935ApJ....81..187A .doi :10.1086/143628 ISSN 0004-637X . ^ Paunzen, E. (May 2022)."Catalogue of stars measured in the Geneva seven-colour photometric system" .Astronomy & Astrophysics .661 : A89.arXiv :2111.04810 Bibcode :2022A&A...661A..89P .doi :10.1051/0004-6361/202142355 eISSN 1432-0746 .ISSN 0004-6361 . ^ Haggkvist, L.; Oja, T. (1970). "Results of BV photometry 1969-70 (Uppsala refractor)".Private Communication .Bibcode :1970Priv.........0H . ^ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters".Astronomy and Astrophysics .430 : 165.arXiv :astro-ph/0409579 Bibcode :2005A&A...430..165F .doi :10.1051/0004-6361:20041272 .S2CID 17804304 . ^ 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 .ISSN 1063-7737 .S2CID 255204555 . ^a b c d Feuillet, Diane K.; Bovy, Jo; Holtzman, Jon; Girardi, Léo; MacDonald, Nick; Majewski, Steven R.; Nidever, David L. (20 January 2016)."Determining Ages of Apogee Giants with Known Distances" .The Astrophysical Journal .817 (1): 40.arXiv :1511.04088 Bibcode :2016ApJ...817...40F .doi :10.3847/0004-637X/817/1/40 eISSN 1538-4357 . ^a b c d Brown, A. G. A. ; et al. (Gaia collaboration ) (August 2018)."Gaia Data Release 2: Summary of the contents and survey properties" .Astronomy & Astrophysics 616 . A1.arXiv :1804.09365 Bibcode :2018A&A...616A...1G doi :10.1051/0004-6361/201833051 Gaia DR2 record for this source atVizieR .^a b c d e Forsberg, R.; Jönsson, H.; Ryde, N.; Matteucci, F. (November 2019)."Abundances of disk and bulge giants from high-resolution optical spectra" .Astronomy & Astrophysics .631 : A113.arXiv :1909.10535 Bibcode :2019A&A...631A.113F .doi :10.1051/0004-6361/201936343 eISSN 1432-0746 .ISSN 0004-6361 . ^ Bartkevicius, A.; Lazauskaite, R. (1 January 1997)."Classification of Population II Stars in the Vilnius Photometric System. II. Results" .Open Astronomy .6 (4): 499.Bibcode :1997BaltA...6..499B .doi :10.1515/astro-1997-0402 eISSN 2543-6376 . ^ Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (January 2017). "General catalogue of variable stars: Version GCVS 5.1".Astronomy Reports .61 (1):80– 88.Bibcode :2017ARep...61...80S .doi :10.1134/S1063772917010085 .ISSN 1063-7729 .S2CID 255195566 .
