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OB2 #8A is a double-lined spectroscopic binary located near the centre of the Cygnus OB2 association located 5,500 light years away. Until 1951 Cyg OB2...

biochemistry Cyg OB2 -8A, a blue star Greek National Road 8A GCR Class 8A, a class of British 0-8-0 steam locomotive Isotta Fraschini Tipo 8A, a successor...

as 120 M☉ and the period as 30 years. Cygnus OB2 #12 is generally assumed to be a member of the Cyg OB2 Association, a cluster of young massive stars...

OB2 is an OB association that is home to some of the most massive and most luminous stars known, including suspected Luminous blue variable Cyg OB2 #12...

/ælˈbɪrioʊ/ is a double star designated Beta Cygni (β Cygni, abbreviated Beta Cyg, β Cyg). The International Astronomical Union uses the name "Albireo" specifically...

NML Cygni or V1489 Cygni (abbreviated to NML Cyg or V1489 Cyg) is a red hypergiant or red supergiant (RSG) in the constellation Cygnus. It is possibly...

is α Cygni, which is Latinised to Alpha Cygni, abbreviated to Alpha Cyg or α Cyg. At a distance of 802 parsecs, it is the farthest star from Earth with...

Cygnus X-1 (abbreviated Cyg X-1) is a galactic X-ray source in the constellation Cygnus and was the first such source widely accepted to be a black hole...

Epsilon Cygni (ε Cygni, abbreviated Epsilon Cyg, ε Cyg) is multiple star system in the constellation of Cygnus. With an apparent visual magnitude of 2...

the Cygnus OB2 association in the Cygnus X complex, although it is much further away. Its distance can be estimated relative to Cygnus OB2 by studying...

PMa offset between 61 Cyg A and B points at the possible presence of a third body in the system, likely orbiting around 61 Cyg B. Cantrell, Justin R.;...

Gamma Cygni (γ Cygni, abbreviated Gamma Cyg, γ Cyg), officially named Sadr /ˈsædər/, is a star in the northern constellation of Cygnus, forming the intersection...

Earth and Space News. 12 February 2020. Retrieved 4 January 2021. "V1974 Cyg (Nova Cygni 1992)". aavso.org. AAVSO. Retrieved 4 January 2021. Hurst, G...

has some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars...

and on October 19, 1686 he recorded it at 5th magnitude. Kirch regarded χ Cyg as a regular variable with a period of 404.5 days, but it was quickly noted...

140 142 147 148 150 Other AFGL 2591 BD+40° 4210 BD+43 3654 Cygnus OB2 #8A Cygnus OB2 #12 Cygnus X-1 Cygnus X-3 G79.29+0.46 G 208-44 G 208-45 GSC 03949-00967...

stars, orbit each other with a period of nearly 3 days. The early type of Y Cyg made it a popular target for astronomers in the past, and spectroscopic orbits...

140 142 147 148 150 Other AFGL 2591 BD+40° 4210 BD+43 3654 Cygnus OB2 #8A Cygnus OB2 #12 Cygnus X-1 Cygnus X-3 G79.29+0.46 G 208-44 G 208-45 GSC 03949-00967...

"Non-thermal radio emission from colliding-wind binaries: modelling Cyg OB2 No. 8A and No. 9". Proceedings of the International Astronomical Union. 6:...

Journal, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590 "57 Cyg". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 January...