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

β Mensae (beta Mensae)

β Mensae is a giant star in the constellation of Mensa.

β Mensae visual magnitude is 5.31. Because of its reltive faintness, β Mensae 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 β Mensae:

β Mensae (beta Mensae) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of β Mensae

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

05h 02m 43s
-71° 18’ 51”

The simplified sky map below shows the position of β Mensae in the sky:

Finder chart β Mensae (beta Mensae) star
Simplified finder chart for β Mensae (beta Mensae).

Visibility of β Mensae from your location

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

β Mensae (beta Mensae) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of β Mensae

The image below is a photograph of β Mensae 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 β Mensae is -0.005 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of β Mensae (beta Mensae) star
DSS2 image of β Mensae. The red arrow shows the motion of β Mensae during the next 100000 years (-8.33 arcmin in Right Ascension and 6.67 arcmin in declination);

Distance of β Mensae from the Sun and relative movement

β Mensae is distant 641.73 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

196.85 pc
641.73 ly
-11 km/s
-0.005 arcsec/year
0.004 arcsec/year

Spectral properties of β Mensae

β Mensae belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of β Mensae

β Mensae
(beta Mensae)