giant · B9III
Sulafat
Sulafat is a blue giant (spectral type B9III) about 620 light-years away. With an apparent magnitude of 3.27 it is easy to see even from a city.
The second-brightest star in Lyra, near the Ring Nebula M57.
Its light output is roughly 1,500 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
- ≈ 620 light-years
- Spectral type
- B9III (giant)
- Colour
- Blue
- Apparent magnitude
- 3.27 mag
- Luminosity
- ≈ 1,500 × Sun
- Position
- Right ascension 18h 59m, declination 32.7°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.