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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:17
sunny   (Daytime)   What's Visible Now?

Alphecca - α Coronae Borealis (alpha Coronae Borealis)

Above the horizon.  Rise: 14:14 | Tran: 22:48 | Set: 7:26
Altitude: 13.0°   Azimuth: 296.8°   Direction: West-North-West

Alphecca, also designated as α Coronae Borealis (alpha Coronae Borealis), is a variable hypergiant star of spectral class A0 in the constellation of Corona Borealis.

Alphecca visual magnitude is 2.23, making it the 65th brightest star in the sky. Because of its brightness, Alphecca is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Celestial coordinates and finder chart of Alphecca

Finder chart Alphecca - α Coronae Borealis (alpha Coronae Borealis) star
Simplified finder chart for Alphecca - α Coronae Borealis (alpha Coronae Borealis).

Alphecca is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Alphecca are provided in the following table:

15h 34m 41s
+26° 42’ 52”
Corona Borealis
Image of Alphecca - α Coronae Borealis (alpha Coronae Borealis) star
DSS2 image of Alphecca. The red arrow shows the motion of Alphecca during the next 1000 years (2.02 arcmin in Right Ascension and -1.48 arcmin in declination);

Key facts about Alphecca


and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where Alphecca is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of Alphecca. Attribution: Richard Powell / CC BY-SA

Distance of Alphecca from the Sun and relative movement

Alphecca is distant 74.68 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

22.91 pc
74.68 ly
2 km/s
0.121 arcsec/year
-0.089 arcsec/year

Alternative designations of Alphecca

α Coronae Borealis
(alpha Coronae Borealis)
5 Coronae Borealis

Visibility of Alphecca from your location

Today's Alphecca - α Coronae Borealis (alpha Coronae Borealis) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):

Azimuth: 63.3°
Max altitude: 65.2°
Azimuth: 296.7°