Kaus Borealis
star · Sagittarius · 2.8ᵐ
Orange star in Sagittarius.
Notable facts
The light you see today left Kaus Borealis around the year 1948.
About 19 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Kaus Borealis in?
Kaus Borealis lies in Sagittarius.
Is Kaus Borealis visible to the naked eye?
2.8ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Kaus Borealis?
Best observed in June.
Data
- RA / Dec (J2000)
- 18h 28m · −25° 25′
- Type
- star
- Constellation
- Sagittarius
- How to observe
- 2.8ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- K1IIIb — orange star
- Absolute magnitude
- 0.9ᵐ
- Luminosity
- ≈37 × the Sun
- Distance
- ~78 light years
- Designation
- HIP 90496
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° | 5° | 149° |
| +55° | 10° | 138° |
| +45° | 20° | 127° |
| +30° | 35° | 120° |
| 0° | 65° | 115° |
| −35° | 80° | 122° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 10:42 |
| February | 08:35 |
| March | 06:50 |
| April | 04:57 |
| May | 03:02 |
| June | 00:56 |
| July | 22:52 |
| August | 20:51 |
| September | 18:58 |
| October | 17:09 |
| November | 15:09 |
| December | 13:00 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.