Kaus Australis
star · Sagittarius · 1.8ᵐ
Blue-white star in Sagittarius.
Notable facts
The light you see today left Kaus Australis around the year 1883.
About 48 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Kaus Australis in?
Kaus Australis lies in Sagittarius.
Is Kaus Australis visible to the naked eye?
1.8ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Kaus Australis?
Best observed in June.
Data
- RA / Dec (J2000)
- 18h 24m · −34° 23′
- Type
- star
- Constellation
- Sagittarius
- How to observe
- 1.8ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- B9.5III — blue-white star
- Absolute magnitude
- -1.4ᵐ
- Luminosity
- ≈316 × the Sun
- Distance
- ~143 light years
- Designation
- HIP 90185
Observing tip
Stars stay points at any magnification: aim your telescope for colour, brightness and companions, not detail.
Altitude above the horizon by latitude
| Latitude | Maximum altitude | Rise azimuth |
|---|---|---|
| +60° | never rises | — |
| +55° | 1° | 170° |
| +45° | 11° | 143° |
| +30° | 26° | 131° |
| 0° | 56° | 124° |
| −35° | 89° | 134° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 10:39 |
| February | 08:31 |
| March | 06:46 |
| April | 04:53 |
| May | 02:58 |
| June | 00:52 |
| July | 22:48 |
| August | 20:47 |
| September | 18:54 |
| October | 17:06 |
| November | 15:05 |
| December | 12:56 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.