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Kaff, Beta Cassiopeiae, 11 Cassiopeiae

Proper NamesCaph, Kaff
Bayer DesignationBeta Cassiopeiae
Flamsteed Number11 Cassiopeiae
HR (BSC)21
Right Ascension0h 9m 11s
Declination+59° 8' 59"
Distance55 light years
17 parsecs
MagnitudeApparent: +2.3
Absolute: +1.2
Spectral ClassF2III bright yellow giant
Optimum VisibilityOctober (Usually visible from northern latitudes)
NotesCaph is a pulsating variable of the Delta Scuti type, showing rapid pulsations over a period of just two and a half hours. It also possesses a companion star that pursues a 27-day orbit around the giant primary.

A pale yellow star, rather more massive than the Sun, that lies about fifty-five light years away. It is the westernmost of the five stars that make up Cassiopeia's characteristic 'W' shape. Caph is a variable star, showing a pulsating pattern in its luminosity.


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