μ2 Crucis (mu2 Crucis)

Below the horizon. Never rises today

Alt: -18.82° Az: 177.99° Direction: South

μ2 Crucis is a variable and double main-sequence star of spectral class B5 in the constellation of Crux.

μ2 Crucis visual magnitude is 5.17. Because of its faintness, μ2 Crucis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of μ2 Crucis. The red arrow shows the motion of μ2 Crucis during the next 10000 years (-5.83 arcmin in Right Ascension and -0.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 56m 07s

Declination -57° 18’ 20”

Hour Angle 23h 45m 55s

Sidereal Time 12h 42m 02s

J2000

Right Ascension 12h 54m 36s

Declination -57° 10’ 05”

Galactic Coordinates

Galactic Longitude 303.37°

Galactic Latitude 5.7°

Finder Chart

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Finder chart for μ2 Crucis (mu2 Crucis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.17

Class Main-sequence

Absolute magnitude -0.05

Spectral Type B5V

Color Index (B-V) -0.12

Temperature 11920K

The red dot in the diagram below shows where μ2 Crucis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of μ2 Crucis. Attribution: Richard Powell / CC BY-SA

Star System Properties

μ2 Crucis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the μ2 Crucis double sysyem:

Main star magnitude 5.17

Secondary star magnitude 6.17

Magnitude difference 1

Separation 34.9 arcsec

Distance, Radial Speed, Proper Motion

μ2 Crucis is distant 361.02 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

Distance (parsec) 110.74

Distance (light year) 361.02

Radial Speed 19 km/s

Proper Motion RA -0.035 arcsec/y

Proper Motion Dec -0.001"/y

Alternative Designations

Bayer designation μ2 Crucis
(mu2 Crucis)

Henry Draper Catalogue HD112091

SAO Catalogue SAO240367

Hipparcos Catalogue HIP63005

Durchmusterung Catalogue CP-56 5487

General Catalogue of Variable Stars Mu2 Cru

Visibility from Your Location

μ2 Crucis (mu2 Crucis) is currently not visible from Greenwich, UK

Set Location

Other stars in Crux