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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:00  
clear_day Transit: 12:48  
SunsetSet: 18:34 south
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All Constellations » Crux » 

α2 Crucis (alpha2 Crucis)

Altitude: -61.9°   Azimuth: 226.6°   Direction: South-West

α2 Crucis is a multiple main-sequence star in the constellation of Crux.

α2 Crucis visual magnitude is 1.73. Thanks to its high brightness, α2 Crucis 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 α2 Crucis:


α2 Crucis (alpha2 Crucis) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -61.9°
Azimuth: 226.6°
Direction: South-West

Celestial coordinates and finder chart of α2 Crucis

α2 Crucis is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of α2 Crucis are provided in the following table:

12h 26m 36s
-63° 05’ 57”

The simplified sky map below shows the position of α2 Crucis in the sky:

Finder chart α2 Crucis (alpha2 Crucis) star
Simplified finder chart for α2 Crucis (alpha2 Crucis).

Visibility of α2 Crucis from your location

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

α2 Crucis (alpha2 Crucis) is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of α2 Crucis

The image below is a photograph of α2 Crucis 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 α2 Crucis is -0.034 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of α2 Crucis (alpha2 Crucis) star
DSS2 image of α2 Crucis. The red arrow shows the motion of α2 Crucis during the next 10000 years (-5.67 arcmin in Right Ascension and -1.17 arcmin in declination);

Spectral properties of α2 Crucis

α2 Crucis belongs to spectral class B1 and has a luminosity class of V corresponding to a main-sequence star.


α2 Crucis star system properties

α2 Crucis is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the α2 Crucis double sysyem:

4.4 arcsec

Alternative designations of α2 Crucis

α2 Crucis
(alpha2 Crucis)