Your guide to the Solar System and the night sky
Please donate now to help keep TheSkyLive ads-free. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]

δ1 Gruis (delta1 Gruis)

δ1 Gruis is a variable and double giant star in the constellation of Grus.

δ1 Gruis visual magnitude is 3.97. Because of its moderate brightness, δ1 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 δ1 Gruis:

δ1 Gruis (delta1 Gruis) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of δ1 Gruis

δ1 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 δ1 Gruis are provided in the following table:

22h 29m 16s
-43° 29’ 44”

The simplified sky map below shows the position of δ1 Gruis in the sky:

Finder chart δ1 Gruis (delta1 Gruis) star
Simplified finder chart for δ1 Gruis (delta1 Gruis).

Visibility of δ1 Gruis from your location

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

δ1 Gruis (delta1 Gruis) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of δ1 Gruis

The image below is a photograph of δ1 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 δ1 Gruis is 0.028 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of δ1 Gruis (delta1 Gruis) star
DSS2 image of δ1 Gruis. The red arrow shows the motion of δ1 Gruis during the next 10000 years (4.67 arcmin in Right Ascension and -0.83 arcmin in declination);

Distance of δ1 Gruis from the Sun and relative movement

δ1 Gruis is distant 295.56 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

90.66 pc
295.56 ly
5 km/s
0.028 arcsec/year
-0.005 arcsec/year

Spectral properties of δ1 Gruis

δ1 Gruis belongs to spectral class G6 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where δ1 Gruis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of δ1 Gruis. Attribution: Richard Powell / CC BY-SA

δ1 Gruis star system properties

δ1 Gruis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the δ1 Gruis double sysyem:

5.6 arcsec

Alternative designations of δ1 Gruis

δ1 Gruis
(delta1 Gruis)