Alphecca - α Coronae Borealis (alpha Coronae Borealis)
Alphecca, also designated as α Coronae Borealis (alpha Coronae Borealis), is a variable hypergiant star in the constellation of Corona Borealis.
Alphecca visual magnitude is 2.23, making it the 66th brightest star in the sky. Thanks to its high brightness, Alphecca is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Alphecca:
Celestial coordinates and finder chart of Alphecca
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:
The simplified sky map below shows the position of Alphecca in the sky:
Visibility of Alphecca from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Today's Alphecca - α Coronae Borealis (alpha Coronae Borealis) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of Alphecca
The image below is a photograph of Alphecca from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Alphecca is 0.121 arcsec per year in Right Ascension and -0.089 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
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.
Spectral properties of Alphecca
Alphecca belongs to spectral class A0 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.
