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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Columba » 

μ Columbae (mu Columbae)

Altitude: -56.2°   Azimuth: 289.5°   Direction: West-North-West

μ Columbae is a variable main-sequence star in the constellation of Columba.

μ Columbae visual magnitude is 5.17. Because of its reltive faintness, μ Columbae should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about μ Columbae:


μ Columbae (mu Columbae) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -56.2°
Azimuth: 289.5°
Direction: West-North-West

Celestial coordinates and finder chart of μ Columbae

μ Columbae 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 μ Columbae are provided in the following table:

05h 45m 59s
-32° 18’ 23”

The simplified sky map below shows the position of μ Columbae in the sky:

Finder chart μ Columbae (mu Columbae) star
Simplified finder chart for μ Columbae (mu Columbae).

Visibility of μ Columbae from your location

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

Today's μ Columbae (mu Columbae) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 122.3°
Max altitude: 6.2°
Azimuth: 237.7°

Digitized Sky Survey image of μ Columbae

The image below is a photograph of μ Columbae 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 μ Columbae is 0.009 arcsec per year in Right Ascension and -0.025 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of μ Columbae (mu Columbae) star
DSS2 image of μ Columbae. The red arrow shows the motion of μ Columbae during the next 10000 years (1.50 arcmin in Right Ascension and -4.17 arcmin in declination);

Distance of μ Columbae from the Sun and relative movement

μ Columbae is distant 1,293.65 light years from the Sun and it is moving far from the Sun at the speed of 109 kilometers per second.

396.83 pc
1,293.65 ly
109 km/s
0.009 arcsec/year
-0.025 arcsec/year

Spectral properties of μ Columbae

μ Columbae belongs to spectral class O9 and has a luminosity class of V corresponding to a main-sequence star.


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

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

Alternative designations of μ Columbae

μ Columbae
(mu Columbae)