subgiant · B2IV
Algenib
Algenib is a blue subgiant (spectral type B2IV) about 390 light-years away. With an apparent magnitude of 2.83 it is easy to see even from a city.
A corner star of the Great Square of Pegasus.
Its light output is roughly 900 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 September.
Key facts
- Distance
- ≈ 390 light-years
- Spectral type
- B2IV (subgiant)
- Colour
- Blue
- Apparent magnitude
- 2.83 mag
- Luminosity
- ≈ 900 × Sun
- Position
- Right ascension 0h 13m, declination 15.2°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.