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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:31 
Transit: 12:56 
Sunset: 19:19
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All Constellations » Libra » 

α1 Librae (alpha1 Librae)

Below the horizon.  Rise: 11:50 | Tran: 16:23 | Set: 20:57
Alt: -45.62°   Az: 49.67°   Direction: North-East

α1 Librae is a multiple sub-giant star of spectral class F4 in the constellation of Libra.

α1 Librae visual magnitude is 5.15. Because of its faintness, α1 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.

Image of α1 Librae (alpha1 Librae) star
DSS2 image of α1 Librae. The red arrow shows the motion of α1 Librae during the next 1000 years (-1.63 arcmin in Right Ascension and -1.10 arcmin in declination);

Celestial Coordinates

Apparent

14h 52m 03s
-16° 05’ 52”
14h 14m 49s
05h 06m 52s

J2000

14h 50m 41s
-15° 59’ 49”

Galactic Coordinates

340.31°
38.07°

Finder Chart

Finder chart α1 Librae (alpha1 Librae) star
Simplified finder chart for α1 Librae (alpha1 Librae).

Magnitude, Color, Spectral Class

5.15
Sub-giant

3.28
F4IV
6827K

The red dot in the diagram below shows where α1 Librae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of α1 Librae. Attribution: Richard Powell / CC BY-SA

Star System Properties

α1 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 α1 Librae double sysyem:

5.15
5.55
0.4
0 arcsec

Distance, Radial Speed, Proper Motion

α1 Librae is distant 77.14 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

23.66
77.14
-23 km/s
-0.098 arcsec/y
-0.066"/y

Alternative Designations

α1 Librae
(alpha1 Librae)
SAO158836
SAO158836
Gl 563.4

Visibility from Your Location

Today's α1 Librae (alpha1 Librae) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 106.1°
Max altitude: 22.4°
Azimuth: 253.9°