11 Lacertae

Star in the constellation Lacerta Lacerta constellation map.svg center 240 right Red circle.svg 10 11 Lacertae 420 788 Location of 11 Lacertae (circled in red) J2000 22 40 30.85848 +44 16 34.7069 Lacerta 4.46 red clump K2.5 III +1.33 +1.36 −10.91 0.09 +93.728 +10.946 9.317 0.105 -0.54 1.38 30.24 0.34 279 10 4,352 -0.2 0.02 8 1.56 0.06 3.2 11 Lac +43°4266 214868 111944 8632 52251 11+Lacertae 11 Lacertae is a star in the northern constellation of Lacerta. It is visible to the naked eye as a faint orange-hued star with an apparent visual magnitude of 4.46. It lies at a distance of about 350 light years and has an absolute magnitude -0.54. The object is moving closer to the Earth with a heliocentric radial velocity of −10.9 km/s. thumb|left|11 Lacertae in optical light This is an evolved giant star with a stellar classification of K2.5 III. It is a red clump giant, meaning it is fusing helium in its core after passing through the red giant branch. The star is 3.2 billion years old with 1.38 times the mass of the Sun and has expanded to 30 times the Sun's radius. It is radiating 280 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,352 K. References 1982252790090609152 11 Lac 2019-02-01 2016A&A...587A.119A 10.1051/0004-6361/201526628 1510.07495 Masses and luminosities for 342 stars from the PennState-Toruń Centre for Astronomy Planet Search Astronomy and Astrophysics 587 A119 Adamczyk M. Deka-Szymankiewicz B. Niedzielski A. 2016 119299522 2002yCat.2237....0D VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system CDS/ADC Collection of Electronic Catalogues 2237 Ducati J. R. 2002 Roman N. G. Identification of a Constellation from a Position 1987 http://cdsarc.u-strasbg.fr/viz-bin/Cat?VI/42 2006-12-26 Bernacca, P. L. Perinotto, M. A catalogue of stellar rotational velocities Contributi Osservatorio Astronomico di Padova in Asiago 239 1 1 1970 1970CoAsi.239....1B Anugu Narsireddy Monnier John D. Mérand Antoine Flores Becky Gallenne Alexandre Gies Douglas R. Gutierrez Mayra Klement Robert Kraus Stefan Empirical H- and K-band Limb Darkening for 31 CHARA Stars: A Near-Infrared Benchmark for Stellar-Atmosphere Models 2026-07-27 The Astronomical Journal 2607.24956 1989ApJS...71..245K The Perkins catalog of revised MK types for the cooler stars Astrophysical Journal Supplement Series 71 245 Keenan Philip C. McNeil Raymond C. 1989 10.1086/191373 2016A&A...588A..98M 10.1051/0004-6361/201527883 1602.00835 Evolved stars and the origin of abundance trends in planet hosts Astronomy and Astrophysics 588 A98 Maldonado J. Villaver E. Niedzielski A. 2016 119212009 2012AstL...38..331A 1108.4971 XHIP: An extended hipparcos compilation Astronomy Letters 38 5 331 Anderson E. Francis Ch. Niedzielski A. 2012 10.1134/S1063773712050015 119257644 1 Famaey B. Jorissen A. Luri X. Mayor M. Udry S. Dejonghe H. Turon C. Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters Astronomy and Astrophysics 430 165–186 2005 10.1051/0004-6361:20041272 2005A&A...430..165F astro-ph/0409579 17804304 Soubiran C. Creevey O. L. Lagarde N. Brouillet N. Jofré P. Casamiquela L. Heiter U. Aguilera-Gómez C. Vitali S. Worley C. de Brito Silva D. 2024-02-01 Gaia FGK benchmark stars: Fundamental Teff and log g of the third version 2024A&A...682A.145S Astronomy and Astrophysics 682 A145 10.1051/0004-6361/202347136 2310.11302 0004-6361 11 Lacertae's database entry at VizieR. 22 40 30.78 + 44 16 34.6 Category:K-type giants Category:Horizontal-branch stars Category:Lacerta BD+43 4266 Lacertae, 11 214868 111944 8632