Alphecca
star · Corona Borealis · 2.2ᵐ
White star in Corona Borealis.
Notable facts
The light you see today left Alphecca around the year 1951.
About 33 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Alphecca in?
Alphecca lies in Corona Borealis.
Is Alphecca visible to the naked eye?
2.2ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Alphecca?
Best observed in May.
Data
- RA / Dec (J2000)
- 15h 35m · +26° 43′
- Type
- star
- Constellation
- Corona Borealis
- How to observe
- 2.2ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- A0V — white star
- Absolute magnitude
- 0.4ᵐ
- Luminosity
- ≈59 × the Sun
- Distance
- ~75 light years
- Designation
- HIP 76267
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° | 57° | 26° |
| +55° | 62° | 38° |
| +45° | 72° | 51° |
| +30° | 87° | 59° |
| 0° | 63° | 63° |
| −35° | 28° | 57° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 07:49 |
| February | 05:42 |
| March | 03:57 |
| April | 02:03 |
| May | 00:09 |
| June | 22:03 |
| July | 19:59 |
| August | 17:58 |
| September | 16:05 |
| October | 14:16 |
| November | 12:15 |
| December | 10:07 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.