5 Persei
From Infogalactic: the planetary knowledge core
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
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Constellation | Perseus |
Right ascension | 02h 25m 16.02916s [1] |
Declination | +56° 36′ 35.3536″ [1] |
Spectral type | B5Ia |
5 Persei is a double star in the constellation Perseus located around 1,786 parsecs (5,830 ly) away. The primary, with an apparent magnitude of 6.27, is a blue supergiant of spectral type B5Ia,[1] a massive star that has used up its core hydrogen and is now fusing heavier elements. The secondary, with an apparent magnitude of 12.4, is of an unknown class.[2]
References
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