supergiant · G0Ib
Sadalsuud
Sadalsuud is a yellow supergiant (spectral type G0Ib) about 540 light-years away. With an apparent magnitude of 2.9 it is easy to see even from a city.
The brightest star in Aquarius; the name means "luckiest of the lucky".
Its light output is roughly 1,600 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 August.
Key facts
- Distance
- ≈ 540 light-years
- Spectral type
- G0Ib (supergiant)
- Colour
- Yellow
- Apparent magnitude
- 2.9 mag
- Luminosity
- ≈ 1,600 × Sun
- Position
- Right ascension 21h 32m, declination -5.6°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.