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61 Cygni

V1803 Cygni

Proper NameNone
Bayer DesignationNone
Flamsteed Number61 Cygni
HR (BSC)8085 (A), 8086 (B)
HD201091 (A), 201092 (B)
Other designationsV1803 Cygni (A)
ConstellationCygnus
Right Ascension21h 6m 54s (A), 21h 6m 55s (B)
Declination+38° 44' 58" (A), +38° 44' 31" (B)
Distance11 light years
3.5 parsecs
MagnitudeApparent: +5.2 (A), +6.1 (B)
Absolute: +7.5 (A), +8.3 (B)
Spectral ClassK5 Orange Dwarf (A), K7 Orange Dwarf (B)
Optimum VisibilityAugust
NotesA binary pair of two small and variable orange stars, separated by a distance averaging some 84 AU and orbiting their common centre of gravity over a period of more than six centuries. The 61 Cygni system is a close neighbour of the Sun, at a distance of just 11.4 light years.

The designation given to two nearby orange dwarf stars in the constellation of Cygnus. The stars have very similar properties, and lie less than a light year from one another. One (designated 61 Cygni A) is very slightly brighter than its companion 61 Cygni B: both lie on the threshold of naked-eye visibility.

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