υ Librae (upsilon Librae)

Below the horizon. Rise: 15:59 | Tran: 21:04 | Set: 2:09

Alt: -38.68° Az: 108.36° Direction: East-South-East

υ Librae is a double giant star of spectral class K3 in the constellation of Libra.

υ Librae visual magnitude is 3.58. Because of its moderate brightness, υ 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 υ Librae. The red arrow shows the motion of υ Librae during the next 100000 years (-15.00 arcmin in Right Ascension and 5.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 38m 34s

Declination -28° 13’ 03”

Hour Angle 15h 48m 54s

Sidereal Time 07h 27m 29s

J2000

Right Ascension 15h 37m 01s

Declination -28° 08’ 06”

Galactic Coordinates

Galactic Longitude 341.89°

Galactic Latitude 21.94°

Finder Chart

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Finder chart for υ Librae (upsilon Librae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 3.58

Class Giant

Absolute magnitude -0.30

Spectral Type K3III

Color Index (B-V) 1.38

Temperature 3983K

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

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

Star System Properties

υ Librae is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the υ Librae double sysyem:

Main star magnitude 3.58

Secondary star magnitude 10.58

Magnitude difference 7

Separation 3.5 arcsec

Distance, Radial Speed, Proper Motion

υ Librae is distant 194.51 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

Distance (parsec) 59.67

Distance (light year) 194.51

Radial Speed -25 km/s

Proper Motion RA -0.009 arcsec/y

Proper Motion Dec 0.003"/y

Alternative Designations

Bayer designation υ Librae
(upsilon Librae)

Flamsteed designation 39 Librae

Henry Draper Catalogue HD139063

SAO Catalogue SAO183619

Hipparcos Catalogue HIP76470

Durchmusterung Catalogue CD-2710464

FK5 Catalogue 579

Aitken Double Star Catalogue ADS9705

Visibility from Your Location

Today's υ Librae (upsilon Librae) rise, transit and set times from Chengnan, China are the following (all times relative to the local timezone Asia/Shanghai):

Azimuth: 118.2° RISE 15:59

Max altitude: 38.5° TRANSIT 21:04

Azimuth: 241.8° SET 2:09

Name:	Chengnan, China
Latitude:	23° 16' 19.9" N
Longitude:	116° 36' 18.0" E
Timezone:	Asia/Shanghai

Set Location

Other stars in Libra