Your guide to the Solar System and the night sky
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🌎  Greenwich, United Kingdom [change]

Alchiba - α Corvi (alpha Corvi)

Alchiba, also designated as α Corvi (alpha Corvi), is a giant star in the constellation of Corvus.

Alchiba visual magnitude is 4.02. Because of its moderate brightness, Alchiba should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about Alchiba:

Alchiba - α Corvi (alpha Corvi) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of Alchiba

Alchiba is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Alchiba are provided in the following table:

12h 08m 24s
-24° 43’ 44”

The simplified sky map below shows the position of Alchiba in the sky:

Finder chart Alchiba - α Corvi (alpha Corvi) star
Simplified finder chart for Alchiba - α Corvi (alpha Corvi).

Visibility of Alchiba from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Alchiba - α Corvi (alpha Corvi) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 114.7°
Max altitude: 13.8°
Azimuth: 245.3°
Alchiba - α Corvi (alpha Corvi) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Alchiba

The image below is a photograph of Alchiba 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 Alchiba is 0.086 arcsec per year in Right Ascension and -0.04 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Alchiba - α Corvi (alpha Corvi) star
DSS2 image of Alchiba. The red arrow shows the motion of Alchiba during the next 10000 years (14.33 arcmin in Right Ascension and -6.67 arcmin in declination);

Distance of Alchiba from the Sun and relative movement

Alchiba is distant 48.15 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

14.77 pc
48.15 ly
4 km/s
0.086 arcsec/year
-0.04 arcsec/year

Spectral properties of Alchiba

Alchiba belongs to spectral class F2 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of Alchiba

α Corvi
(alpha Corvi)
Gl 455.3