giant · B9.5III
Kaus Australis
Kaus Australis is a blue giant (spectral type B9.5III) about 143 light-years away. With an apparent magnitude of 1.79 it is a very bright, conspicuous star.
The brightest star in Sagittarius, part of the "Teapot" asterism.
Its light output is roughly 320 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 June.
Key facts
- Distance
- ≈ 143 light-years
- Spectral type
- B9.5III (giant)
- Colour
- Blue
- Apparent magnitude
- 1.79 mag
- Luminosity
- ≈ 320 × Sun
- Position
- Right ascension 18h 24m, declination -34.4°
More well-known stars
Data: Hipparcos / HYG catalogue (CC BY-SA 4.0). Luminosity and visibility are calculated estimates.