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

θ Indi (theta Indi)

θ Indi is a double main-sequence star in the constellation of Indus.

θ Indi visual magnitude is 4.39. Because of its moderate brightness, θ 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 θ Indi:

4.39
Main-sequence
θ Indi (theta Indi) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of θ Indi

θ Indi 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 θ Indi are provided in the following table:

21h 19m 51s
-53° 26’ 58”
343.69°
-43.32°
Indus

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

Finder chart θ Indi (theta Indi) star
Simplified finder chart for θ Indi (theta Indi).

Visibility of θ Indi from your location

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

θ Indi (theta Indi) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of θ Indi

The image below is a photograph of θ 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 θ Indi is 0.105 arcsec per year in Right Ascension and -0.072 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of θ Indi (theta Indi) star
DSS2 image of θ Indi. The red arrow shows the motion of θ Indi during the next 1000 years (1.75 arcmin in Right Ascension and -1.20 arcmin in declination);

Distance of θ Indi from the Sun and relative movement

θ Indi is distant 97.08 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

29.78 pc
97.08 ly
-15 km/s
0.105 arcsec/year
-0.072 arcsec/year

Spectral properties of θ Indi

θ Indi belongs to spectral class A5 and has a luminosity class of V corresponding to a main-sequence star.

2.02
A5V
8241K

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

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

θ Indi star system properties

θ Indi is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the θ Indi double sysyem:

4.39
6.79
2.4
6.1 arcsec

Alternative designations of θ Indi

θ Indi
(theta Indi)
SAO246965
SAO246965
Wo 9733 A