giant · B9III
Markab
Markab is a blue giant (spectral type B9III) about 133 light-years away. With an apparent magnitude of 2.49 it is easy to see even from a city.
A corner star of the Great Square of Pegasus.
Its light output is roughly 140 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 September.
Key facts
- Distance
- ≈ 133 light-years
- Spectral type
- B9III (giant)
- Colour
- Blue
- Apparent magnitude
- 2.49 mag
- Luminosity
- ≈ 140 × Sun
- Position
- Right ascension 23h 5m, declination 15.2°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.