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

α Mensae (alpha Mensae)

α Mensae is a main-sequence star in the constellation of Mensa.

α Mensae visual magnitude is 5.09. Because of its reltive faintness, α 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 α Mensae:

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

Celestial coordinates and finder chart of α Mensae

α 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 α Mensae are provided in the following table:

06h 10m 14s
-74° 45’ 11”

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

Finder chart α Mensae (alpha Mensae) star
Simplified finder chart for α Mensae (alpha Mensae).

Visibility of α Mensae from your location

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

α Mensae (alpha Mensae) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of α Mensae

The image below is a photograph of α 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 α Mensae is 0.118 arcsec per year in Right Ascension and -0.213 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of α Mensae (alpha Mensae) star
DSS2 image of α Mensae. The red arrow shows the motion of α Mensae during the next 1000 years (1.97 arcmin in Right Ascension and -3.55 arcmin in declination);

Distance of α Mensae from the Sun and relative movement

α Mensae is distant 33.08 light years from the Sun and it is moving far from the Sun at the speed of 35 kilometers per second.

10.15 pc
33.08 ly
35 km/s
0.118 arcsec/year
-0.213 arcsec/year

Spectral properties of α Mensae

α Mensae belongs to spectral class G6 and has a luminosity class of V corresponding to a main-sequence star.


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

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

Alternative designations of α Mensae

α Mensae
(alpha Mensae)