giant · A7III
Seginus
Seginus is a blue-white giant (spectral type A7III) about 87 light-years away. With an apparent magnitude of 3.03 it is easy to see even from a city.
A star in Boötes.
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
- ≈ 87 light-years
- Spectral type
- A7III (giant)
- Colour
- Blue-white
- Apparent magnitude
- 3.03 mag
- Luminosity
- ≈ 40 × Sun
- Position
- Right ascension 14h 32m, declination 38.3°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.