10 Lacertae

Star in the constellation Lacerta Lacerta constellation map.svg center right 260 Red circle.svg 10 10 Lacertae 422 993 Location of 10 Lac (circled) J2000 Lacerta 22 39 15.67804 +39 03 00.9724 4.880Oja T. UBV photometry of stars whose positions are accurately known. VII Astronomy and Astrophysics Supplement Series 0365-0138 100 3 591–592 September 1993 1993A&AS..100..591O O9V2011ApJS..193...24S The Galactic O-Star Spectroscopic Survey. I. Classification System and Bright Northern Stars in the Blue-violet at R ~ 2500 The Astrophysical Journal Supplement 193 3 24 Sota, A. Maíz Apellániz, J. Walborn, N. R. Alfaro, E. J. Barbá, R. H. Morrell, N. I. Nidia Morrell Gamen, R. C. Arias, J. I. 1101.4002 10.1088/0067-0049/193/2/24 2011 119248206 −0.210 −1.010 β Cep?2009yCat....102025S January 2009 VizieR On-line Data Catalog: General Catalogue of Variable Stars VizieR On-line Data Catalog Samus, N. N. Durlevich, O. V. −10.102006AstL...32..759G Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system Astronomy Letters 32 11 759–771 Gontcharov G. A. 2006 10.1134/S1063773706110065 1606.08053 119231169 -1.274 -5.605 2.192 0.131 1908095850396090880 552 32 552 pc ly number 32 pc ly number commas -4.17 0.12 Aschenbrenner P. Przybilla N. Butler K. 2023-03-01 Quantitative spectroscopy of late O-type main-sequence stars with a hybrid non-LTE method 2023A&A...671A..36A 2301.09462 Astronomy and Astrophysics 671 A36 10.1051/0004-6361/202244906 0004-6361 21.6 0.5 7.4 0.5 69200 8440 7520 commas 34550 300 commas 4.04 0.05 14 1 3.55 0.72 0.60 10 Lac, HR 8622, BD+38°4826, HD 214680, SAO 72575, HIP 111841, NSV 25932, WDS J22393+3903 10+Lacertae 10 Lacertae (10 Lac) is a star in the constellation Lacerta. With an apparent magnitude of 4.9, it is located around 550 pc ly distant in the small Lacerta OB1 association. It is a hot blue main-sequence star of spectral type O9V, a massive star that is currently fusing its core hydrogen. It is a suspected Beta Cephei variable star. It was one of the first O-type stars (along with S Monocerotis) to be defined as an anchor point for the MKK spectral classification; since the early twentieth century it has served as such a point. Specifically, the star is representative of O9V stars, meaning relatively cool O-type stars on the main-sequence.Garrison R. F. A Hierarchy of Standards for the MK Process Astronomical Society of the Pacific 60 3 1994 1994ASPC...60....3G It is the star with the smallest angular diameter measured by the CHARA array 2018 y, at 0.11 0.02 milliarcseconds.Gordon Kathryn D. Gies Douglas R. Schaefer Gail H. Huber Daniel Ireland Michael Hillier D. John December 2018 Angular Sizes and Effective Temperatures of O-type Stars from Optical Interferometry with the CHARA Array The Astrophysical Journal en 869 1 37 10.3847/1538-4357/aaec04 free 1812.05511 2018ApJ...869...37G 0004-637X 10 Lacertae has an 8th magnitude companion about one arc-minute away.1994CoORB.115.....D Dommanget, J. Nys, O. Catalogue of the Components of Double and Multiple stars (CCDM). First edition. Communications de l'Observatoire Royal de Belgique 115 1994 References Category:Lacerta Lacertae, 10 8622 111841 214680 BD+38 4826 Category:O9V stars