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🌎  Greenwich, United Kingdom [change]

η Mensae (eta Mensae)

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

η Mensae visual magnitude is 5.47. Because of its reltive faintness, η 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 η Mensae:

5.47
Giant
η Mensae (eta Mensae) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of η Mensae

η 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 η Mensae are provided in the following table:

04h 55m 11s
-74° 56’ 12”
287.12°
-33.55°
Mensa

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

Finder chart η Mensae (eta Mensae) star
Simplified finder chart for η Mensae (eta Mensae).

Visibility of η Mensae from your location

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

η Mensae (eta Mensae) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of η Mensae

The image below is a photograph of η 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 η Mensae is 0.024 arcsec per year in Right Ascension and 0.059 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of η Mensae (eta Mensae) star
DSS2 image of η Mensae. The red arrow shows the motion of η Mensae during the next 10000 years (4.00 arcmin in Right Ascension and 9.83 arcmin in declination);

Distance of η Mensae from the Sun and relative movement

η Mensae is distant 711.79 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

218.34 pc
711.79 ly
26 km/s
0.024 arcsec/year
0.059 arcsec/year

Spectral properties of η Mensae

η Mensae belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.

-1.23
K4III
3764K

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

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

Alternative designations of η Mensae

η Mensae
(eta Mensae)
SAO256145
SAO256145