giant · B7III
Alcyone
Alcyone is a blue giant (spectral type B7III) about 440 light-years away. With an apparent magnitude of 2.87 it is easy to see even from a city.
The brightest star of the Pleiades (Seven Sisters).
Its light output is roughly 1,100 times that of the Sun (a rough estimate in visible light, calculated from brightness and distance).
From Germany (52° N) it rises and sets; it is best seen in the evening in November.
Key facts
- Distance
- ≈ 440 light-years
- Spectral type
- B7III (giant)
- Colour
- Blue
- Apparent magnitude
- 2.87 mag
- Luminosity
- ≈ 1,100 × Sun
- Position
- Right ascension 3h 47m, declination 24.1°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.