θ Librae (theta Librae)

Below the horizon. Rise: 20:26 | Tran: 0:55 | Set: 5:29

Alt: -14.96° Az: 98.32° Direction: East

θ Librae is a giant star of spectral class G8 in the constellation of Libra.

θ Librae visual magnitude is 4.15. Because of its moderate brightness, θ Librae 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 Librae. The red arrow shows the motion of θ Librae during the next 1000 years (1.65 arcmin in Right Ascension and 2.22 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 55m 16s

Declination -16° 48’ 10”

Hour Angle 17h 47m 42s

Sidereal Time 09h 42m 58s

J2000

Right Ascension 15h 53m 49s

Declination -16° 43’ 45”

Galactic Coordinates

Galactic Longitude 353.54°

Galactic Latitude 27.72°

Finder Chart

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Finder chart for θ Librae (theta Librae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.15

Class Giant

Absolute magnitude 0.66

Spectral Type G8III

Color Index (B-V) 1.02

Temperature 4695K

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

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

Distance, Radial Speed, Proper Motion

θ Librae is distant 162.84 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 49.95

Distance (light year) 162.84

Radial Speed 3 km/s

Proper Motion RA 0.099 arcsec/y

Proper Motion Dec 0.133"/y

Alternative Designations

Bayer designation θ Librae
(theta Librae)

Flamsteed designation 46 Librae

Henry Draper Catalogue HD142198

SAO Catalogue SAO159563

Hipparcos Catalogue HIP77853

Durchmusterung Catalogue BD-16 4174

Visibility from Your Location

Today's θ Librae (theta Librae) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 106.8° RISE 20:26

Max altitude: 21.7° TRANSIT 0:55

Azimuth: 253.2° SET 5:29

Set Location

Other stars in Libra