ι Arae (iota Arae)

Below the horizon. Never rises today

Alt: -11.76° Az: 161.35° Direction: South

ι Arae is a variable and double giant star of spectral class B2 in the constellation of Ara.

ι Arae visual magnitude is 5.25. Because of its faintness, ι Arae is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of ι Arae. The red arrow shows the motion of ι Arae during the next 10000 years (-1.67 arcmin in Right Ascension and -4.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 17h 25m 11s

Declination -47° 29’ 25”

Hour Angle 22h 09m 36s

Sidereal Time 15h 34m 47s

J2000

Right Ascension 17h 23m 16s

Declination -47° 28’ 05”

Galactic Coordinates

Galactic Longitude 342.01°

Galactic Latitude -6.33°

Finder Chart

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Finder chart for ι Arae (iota Arae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.25

Class Giant

Absolute magnitude -1.47

Spectral Type B2III

Color Index (B-V) -0.11

Temperature 11744K

The red dot in the diagram below shows where ι Arae is situated in the Hertzsprung–Russell diagram.

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

Star System Properties

ι Arae 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 ι Arae double sysyem:

Main star magnitude 5.25

Secondary star magnitude 10.55

Magnitude difference 5.3

Separation 42.8 arcsec

Distance, Radial Speed, Proper Motion

ι Arae is distant 721.24 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

Distance (parsec) 221.24

Distance (light year) 721.24

Radial Speed -19 km/s

Proper Motion RA -0.01 arcsec/y

Proper Motion Dec -0.024"/y

Alternative Designations

Bayer designation ι Arae
(iota Arae)

Henry Draper Catalogue HD157042

SAO Catalogue SAO227886

Hipparcos Catalogue HIP85079

Durchmusterung Catalogue CD-4711484

FK5 Catalogue 3379

General Catalogue of Variable Stars Iot Ara

Visibility from Your Location

ι Arae (iota Arae) is currently not visible from Greenwich, UK

Set Location

Other stars in Ara