giant · G9III
Altais
Altais is a yellow giant (spectral type G9III) about 97 light-years away. With an apparent magnitude of 3.07 it is easy to see even from a city.
A star in Draco.
Its light output is roughly 40 times that of the Sun (a rough estimate in visible light, calculated from brightness and distance).
From Germany (52° N) it never sets: it stays above the horizon all year.
Key facts
- Distance
- ≈ 97 light-years
- Spectral type
- G9III (giant)
- Colour
- Yellow
- Apparent magnitude
- 3.07 mag
- Luminosity
- ≈ 40 × Sun
- Position
- Right ascension 19h 13m, declination 67.7°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.