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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:00  
clear_day Transit: 12:48  
SunsetSet: 18:34 south
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All Constellations » Indus » 

α Indi (alpha Indi)

Altitude: -63.3°   Azimuth: 97.4°   Direction: East

α Indi is a multiple hypergiant star in the constellation of Indus.

α Indi visual magnitude is 3.11. Because of its moderate brightness, α Indi 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 α Indi:


α Indi (alpha Indi) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -63.3°
Azimuth: 97.4°
Direction: East

Celestial coordinates and finder chart of α Indi

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

20h 37m 33s
-47° 17’ 29”

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

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

Visibility of α Indi from your location

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

α Indi (alpha Indi) is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of α Indi

The image below is a photograph of α Indi 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 Indi is 0.053 arcsec per year in Right Ascension and 0.066 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of α Indi (alpha Indi) star
DSS2 image of α Indi. The red arrow shows the motion of α Indi during the next 10000 years (8.83 arcmin in Right Ascension and 11.00 arcmin in declination);

Distance of α Indi from the Sun and relative movement

α Indi is distant 101.21 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

31.05 pc
101.21 ly
-1 km/s
0.053 arcsec/year
0.066 arcsec/year

Spectral properties of α Indi

α Indi belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


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

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

α Indi star system properties

α Indi 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 α Indi double sysyem:

66 arcsec

Alternative designations of α Indi

α Indi
(alpha Indi)
Gl 794.1