C.D.S. - SIMBAD4 rel 1.8 - 2024.03.19CET07:06:30 V* YY Dra --------- Object V* YY Dra --- EB* --- OID=@4986137 (@@-1,255) --- coobox=3152 Coordinates(ICRS,ep=J2000,eq=2000): 11 43 35.0 +71 42 12 (~) E [~ ~ ] 2003AstL...29..468S Coordinates(FK4,ep=B1950,eq=1950): 11 40 45.4 +71 58 51 Coordinates(Gal,ep=J2000,eq=2000): 130.3027 +44.4410 hierarchy counts: #parents=0, #children=0, #siblings=0 Proper motions: ~ ~ [~ ~ ] ~ ~ Parallax: ~ [~] ~ ~ Radial Velocity: ~ [~ ~ ] ~ ~ Redshift: ~ [~ ~ ] ~ ~ cz: ~ [~ ~ ] ~ ~ Flux Spectral type: ~ ~ ~ Morphological type: ~ ~ ~ Angular size: ~ ~ ~ (~) ~ ~ Identifiers (2): SV* SVS 504 V* YY Dra Bibcodes 1850-2024 () (35): 2022A&A...657A..12J 2022AJ....163..246H 2022ApJ...928..164C 2022MNRAS.516.3144D 2022RAA....22d5003Y 2021ApJ...914....5S 2020MNRAS.494..425R 2019ApJ...878...53X 2018A&A...617A..52W 2018MNRAS.473.4692P 2018MNRAS.478.1185B 2017A&A...602A.102H 2017ATel10477....1B 2016ApJ...833...14H 2015NewA...36...64E 2015NewA...37...35E 2015PASJ...67....3K 2014ApJ...797...38S 2013AN....334..860A 2012ApJ...746..165H 2012ApJS..199....7F 2012ApJS..203...29G 2012MNRAS.420.3350N 2012MmSAI..83..446G 2012MmSAI..83..632Y 2011AJ....141..129H 2010A&A...513A..63R 2010A&A...520A..25Y 2010ApJ...713.1183L 2009PASP..121.1205P 2008JAVSO..36...60C 2002AJ....123..413S 1991ApJ...370..370M 1988IBVS.3154....1K 1987IBVS.3079....1P Measures ( ): Notes (1) : (S) 02-Jun-2009 - bc ref:1987IBVS.3079....1P obj:V* YY Dra According to the GCVS team, YY Dra is considered to be a distinct star from \object{DO Dra}. Whereas DO Dra is a well-documented dwarf nova, YY Dra is a lost eclipsing binary, which original coordinates are probably erroneous (see discussions in 1987IBVS.3079....1P and 1988IBVS.3154....1K) ================================================================================