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Sigma Cygni

67 Cygni

Blue supergiant in Cygnus

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Proper Name	None
Bayer Designation	Sigma Cygni
Flamsteed Number	67 Cygni
HR (BSC)	8143
HD	202850
Constellation	Cygnus
Right Ascension	21h 17m 25s
Declination	+39° 23' 41"
Distance	c.2,900 light years c.900 parsecs
Magnitude	Apparent: +4.26 Absolute: -5.47
Spectral Class	B9Iab blue supergiant
Optimum Visibility	August / September

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