μ Librae (mu Librae)

Below the horizon. Rise: 19:27 | Tran: 0:11 | Set: 4:58

Alt: -12.17° Az: 262.33° Direction: West

μ Librae is a variable and multiple star of spectral class A1 in the constellation of Libra.

μ Librae visual magnitude is 5.31. Because of its faintness, μ 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 μ Librae. The red arrow shows the motion of μ Librae during the next 10000 years (-10.17 arcmin in Right Ascension and -2.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 14h 50m 42s

Declination -14° 15’ 10”

Hour Angle 06h 06m 55s

Sidereal Time 20h 57m 38s

J2000

Right Ascension 14h 49m 19s

Declination -14° 08’ 56”

Galactic Coordinates

Galactic Longitude 341.3°

Galactic Latitude 39.78°

Finder Chart

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Finder chart for μ Librae (mu Librae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.31

Class

μ Librae is also a SrCrEu chemically peculiar star.

Absolute magnitude 1.02

Spectral Type A1

Color Index (B-V) 0.07

Temperature 9328K

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

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

Star System Properties

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

Main star magnitude 5.31

Secondary star magnitude 6.21

Magnitude difference 0.9

Separation 1.8 arcsec

Distance, Radial Speed, Proper Motion

μ Librae is distant 235.21 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

Distance (parsec) 72.15

Distance (light year) 235.21

Radial Speed -4 km/s

Proper Motion RA -0.061 arcsec/y

Proper Motion Dec -0.014"/y

Alternative Designations

Bayer designation μ Librae
(mu Librae)

Flamsteed designation 7 Librae

Henry Draper Catalogue HD130559

SAO Catalogue SAO158821

Hipparcos Catalogue HIP72489

Durchmusterung Catalogue BD-13 3986

General Catalogue of Variable Stars 6816

Aitken Double Star Catalogue ADS9396

Visibility from Your Location

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

Azimuth: 104.3° RISE 19:27

Max altitude: 24.3° TRANSIT 0:11

Azimuth: 255.7° SET 4:58

Set Location

Other stars in Libra