θ Arae (theta Arae)

Below the horizon. Rise: 21:00 | Tran: 0:12 | Set: 3:24

Alt: -48.21° Az: 133.99° Direction: South-East

θ Arae is a supergiant star of spectral class B2 in the constellation of Ara.

θ Arae visual magnitude is 3.66. Because of its moderate brightness, θ Arae 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 Arae. The red arrow shows the motion of θ Arae during the next 10000 years (-1.67 arcmin in Right Ascension and -2.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 08m 37s

Declination -50° 05’ 12”

Hour Angle 15h 13m 23s

Sidereal Time 09h 22m 00s

J2000

Right Ascension 18h 06m 37s

Declination -50° 05’ 30”

Galactic Coordinates

Galactic Longitude 343.33°

Galactic Latitude -13.82°

Finder Chart

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Finder chart for θ Arae (theta Arae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.66

Class Supergiant

Absolute magnitude -3.80

Spectral Type B2I

Color Index (B-V) -0.08

Temperature 11247K

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

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

Distance, Radial Speed, Proper Motion

θ Arae is distant 1,012.42 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 310.56

Distance (light year) 1,012.42

Radial Speed 3 km/s

Proper Motion RA -0.01 arcsec/y

Proper Motion Dec -0.014"/y

Alternative Designations

Bayer designation θ Arae
(theta Arae)

Henry Draper Catalogue HD165024

SAO Catalogue SAO245242

Hipparcos Catalogue HIP88714

Durchmusterung Catalogue CD-5011720

FK5 Catalogue 1471

Visibility from Your Location

Today's θ Arae (theta Arae) rise, transit and set times from Shimen, Cina are the following (all times relative to the local timezone Asia/Shanghai):

Azimuth: 140.1° RISE 21:00

Max altitude: 10.8° TRANSIT 0:12

Azimuth: 219.9° SET 3:24

Name:	Shimen, Cina
Latitude:	29° 6' 1.4" N
Longitude:	106° 1' 58.8" E
Timezone:	Asia/Shanghai

Set Location

Other stars in Ara