bright giant · K2II
Albireo
Albireo is a orange bright giant (spectral type K2II) about 430 light-years away. With an apparent magnitude of 3.07 it is easy to see even from a city.
A colourful double star: gold and blue – one of the most beautiful in a telescope.
Its light output is roughly 880 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 July.
Key facts
- Distance
- ≈ 430 light-years
- Spectral type
- K2II (bright giant)
- Colour
- Orange
- Apparent magnitude
- 3.07 mag
- Luminosity
- ≈ 880 × Sun
- Position
- Right ascension 19h 31m, declination 28°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.