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Peacock

Alpha Pavonis

Proper NamePeacock
Bayer DesignationAlpha Pavonis
Flamsteed NumberNone
HR (BSC)7790
HD193924
ConstellationPavo
Right Ascension20h 25m 39s
Declination-56° 44' 6"
Distance179 light years
55 parsecs
MagnitudeApparent: +1.9
Absolute: -1.8
Spectral ClassB2IV Blue Subgiant
Optimum VisibilityAugust (Usually visible from southern latitudes)
NotesThe primary star of this binary system is a blue subgiant some five times the diameter and mass of the Sun, but is hundreds of times more luminous. Its close binary companion, detected spectroscopically, orbits the subgiant over a period of nearly twelve days.

The brightest star in the constellation of Pavo, the Peacock, is also called 'Peacock'. A blue subgiant, if it lay ten parsecs from Earth, it would shine more brightly than Sirius.

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