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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:12 
Transit: 12:56 
Sunset: 20:41
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All Constellations » Libra » 

ο Librae (omicron Librae)

Above the horizon.  Rise: 20:18 | Tran: 0:54 | Set: 5:34
Alt: 22.88°   Az: 178.89°   Direction: South

ο Librae is a double hypergiant star of spectral class F0 in the constellation of Libra.

ο Librae visual magnitude is 6.3. Because of its faintness, ο 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 ο Librae (omicron Librae) star
DSS2 image of ο Librae. The red arrow shows the motion of ο Librae during the next 10000 years (4.00 arcmin in Right Ascension and 4.33 arcmin in declination);

Celestial Coordinates

Apparent

15h 22m 26s
-15° 38’ 17”
23h 55m 44s
15h 18m 11s

J2000

15h 21m 01s
-15° 32’ 53”

Galactic Coordinates

347.81°
33.98°

Finder Chart

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Finder chart for ο Librae (omicron Librae).

Magnitude, Color, Spectral Class

6.3
Hypergiant

2.61
F0III
6827K

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

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

Star System Properties

ο Librae is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the ο Librae double sysyem:

6.3
8.5
2.2
44.4 arcsec

Distance, Radial Speed, Proper Motion

ο Librae is distant 178.04 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

54.61
178.04
5 km/s
0.024 arcsec/y
0.026"/y

Alternative Designations

ο Librae
(omicron Librae)
SAO159191
SAO159191

Visibility from Your Location

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

Azimuth: 105.6°
Max altitude: 22.9°
Azimuth: 254.4°