Rukbat
star · Sagittarius · 4.0ᵐ
Blue-white star in Sagittarius.
Notable facts
The light you see today left Rukbat around the year 1844.
About 7 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Rukbat in?
Rukbat lies in Sagittarius.
Is Rukbat visible to the naked eye?
4.0ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Rukbat?
Best observed in July.
Data
- RA / Dec (J2000)
- 19h 24m · −40° 37′
- Type
- star
- Constellation
- Sagittarius
- How to observe
- 4.0ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- B8V — blue-white star
- Absolute magnitude
- 0.2ᵐ
- Luminosity
- ≈69 × the Sun
- Distance
- ~182 light years
- Designation
- HIP 95347
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° | never rises | — |
| +45° | 4° | 157° |
| +30° | 19° | 139° |
| 0° | 49° | 131° |
| −35° | 84° | 143° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 11:38 |
| February | 09:31 |
| March | 07:46 |
| April | 05:52 |
| May | 03:58 |
| June | 01:52 |
| July | 23:48 |
| August | 21:47 |
| September | 19:54 |
| October | 18:05 |
| November | 16:05 |
| December | 13:56 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.