θ Indi (theta Indi)

Below the horizon. Never rises today

Alt: -36.10° Az: 132.70° Direction: South-East

θ Indi is a double main-sequence star of spectral class A5 in the constellation of Indus.

θ Indi visual magnitude is 4.39. Because of its moderate brightness, θ Indi is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

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);

Celestial Coordinates

Apparent

Right Ascension 21h 21m 38s

Declination -53° 20’ 30”

Hour Angle 18h 23m 46s

Sidereal Time 15h 45m 25s

J2000

Right Ascension 21h 19m 51s

Declination -53° 26’ 58”

Galactic Coordinates

Galactic Longitude 343.69°

Galactic Latitude -43.32°

Finder Chart

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Finder chart for θ Indi (theta Indi).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.39

Class Main-sequence

Absolute magnitude 2.02

Spectral Type A5V

Color Index (B-V) 0.19

Temperature 8241K

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

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

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:

Main star magnitude 4.39

Secondary star magnitude 6.79

Magnitude difference 2.4

Separation 6.1 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 29.78

Distance (light year) 97.08

Radial Speed -15 km/s

Proper Motion RA 0.105 arcsec/y

Proper Motion Dec -0.072"/y

Alternative Designations

Bayer designation θ Indi
(theta Indi)

Henry Draper Catalogue HD202730

SAO Catalogue SAO246965

Hipparcos Catalogue HIP105319

Durchmusterung Catalogue CP-5310037

Gliese Catalogue Wo 9733 A

Visibility from Your Location

θ Indi (theta Indi) is currently not visible from Greenwich, UK

Set Location

Other stars in Indus