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Asellus Borealis

Gamma Cancri, 43 Cancri

Proper NameAsellus Borealis
Bayer DesignationGamma Cancri
Flamsteed Number43 Cancri
HR (BSC)3449
Right Ascension8h 43m 17s
Declination+21° 28' 7"
Distance175 light years
54 parsecs
MagnitudeApparent: +4.67
Absolute: +0.95
Spectral ClassA1IV white subgiant
Optimum VisibilityFebruary
NotesAsellus Borealis is a single star with no known campanions. It is considerably hotter than the Sun, with an estimated temperature of some 9,400 K (as compared to less than 6,000 K for the Sun), hence the star's white colouration.

The northernmost of Cancer's two 'donkey stars' is a rather faint white star some 175 light years from the Solar System.

Imagery provided by Aladin sky atlas


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