λ Librae (lambda Librae)

Below the horizon. Rise: 1:48 | Tran: 5:57 | Set: 10:05

Alt: -16.27° Az: 257.76° Direction: West-South-West

λ Librae is a double main-sequence star of spectral class B2 in the constellation of Libra.

λ Librae visual magnitude is 5.03. Because of its faintness, λ Librae 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 λ Librae. The red arrow shows the motion of λ Librae during the next 10000 years (-1.83 arcmin in Right Ascension and -3.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 54m 47s

Declination -20° 14’ 25”

Hour Angle 06h 03m 43s

Sidereal Time 21h 58m 31s

J2000

Right Ascension 15h 53m 20s

Declination -20° 10’ 01”

Galactic Coordinates

Galactic Longitude 350.72°

Galactic Latitude 25.38°

Finder Chart

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Finder chart for λ Librae (lambda Librae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.03

Class Main-sequence

Absolute magnitude -0.16

Spectral Type B2V

Color Index (B-V) -0.01

Temperature 10252K

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

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

Star System Properties

λ 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 λ Librae double sysyem:

Main star magnitude 5.03

Secondary star magnitude 7.03

Magnitude difference 2

Separation 0 arcsec

Distance, Radial Speed, Proper Motion

λ Librae is distant 356.28 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

Distance (parsec) 109.29

Distance (light year) 356.28

Radial Speed 6 km/s

Proper Motion RA -0.011 arcsec/y

Proper Motion Dec -0.023"/y

Alternative Designations

Bayer designation λ Librae
(lambda Librae)

Flamsteed designation 45 Librae

Henry Draper Catalogue HD142096

SAO Catalogue SAO183895

Hipparcos Catalogue HIP77811

Durchmusterung Catalogue BD-19 4249

FK5 Catalogue 1415

Visibility from Your Location

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

Azimuth: 110.2° RISE 1:48

Max altitude: 18.3° TRANSIT 5:57

Azimuth: 249.8° SET 10:05

Set Location

Other stars in Libra