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Rutilicus, Antilicus, Beta Herculis, 27 Herculis

Proper NamesKornephoros, Rutilicus, Antilicus
Bayer DesignationBeta Herculis
Flamsteed Number27 Herculis
HR (BSC)6148
Right Ascension16h 30m 13s
Declination+21° 29' 23"
Distance139 light years
43 parsecs
MagnitudeApparent: +2.8
Absolute: -0.4
Spectral ClassG7IIIaFe-0.5 yellow giant
Optimum VisibilityJune
NotesThe primary star of this system is an evolved yellow giant with a diameter some seventeen times that of the Sun and a variable magnitude. This giant star has a binary companion, a dwarf star with a mass close to that of the Sun, detectable only by its gravitational effect on the giant primary.

Kornephoros is a variable yellow giant in the constellation of Hercules, near its border with Serpens. It is a binary system: the main giant has a much fainter companion in orbit around it.


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