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🌎  Greenwich, United Kingdom [change]

μ1 Gruis (mu1 Gruis)

μ1 Gruis is a giant star in the constellation of Grus.

μ1 Gruis visual magnitude is 4.79. Because of its moderate brightness, μ1 Gruis should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about μ1 Gruis:

μ1 Gruis (mu1 Gruis) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of μ1 Gruis

μ1 Gruis 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 μ1 Gruis are provided in the following table:

22h 15m 36s
-41° 20’ 48”

The simplified sky map below shows the position of μ1 Gruis in the sky:

Finder chart μ1 Gruis (mu1 Gruis) star
Simplified finder chart for μ1 Gruis (mu1 Gruis).

Visibility of μ1 Gruis from your location

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

μ1 Gruis (mu1 Gruis) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of μ1 Gruis

The image below is a photograph of μ1 Gruis 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 μ1 Gruis is 0.044 arcsec per year in Right Ascension and 0.022 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of μ1 Gruis (mu1 Gruis) star
DSS2 image of μ1 Gruis. The red arrow shows the motion of μ1 Gruis during the next 10000 years (7.33 arcmin in Right Ascension and 3.67 arcmin in declination);

Distance of μ1 Gruis from the Sun and relative movement

μ1 Gruis is distant 262.06 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

80.39 pc
262.06 ly
-7 km/s
0.044 arcsec/year
0.022 arcsec/year

Spectral properties of μ1 Gruis

μ1 Gruis 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 μ1 Gruis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of μ1 Gruis. Attribution: Richard Powell / CC BY-SA

Alternative designations of μ1 Gruis

μ1 Gruis
(mu1 Gruis)