Brachium - σ Librae (sigma Librae)
Brachium, also designated as σ Librae (sigma Librae), is a variable giant star in the constellation of Libra.
Brachium visual magnitude is 3.29. Because of its moderate brightness, Brachium should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.
The proper motion of Brachium is -0.073 arcsec per year in Right Ascension and -0.043 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Key facts about Brachium
Brachium - σ Librae (sigma Librae) is above the horizon from Greenwich, United Kingdom.
Altitude: 11.3°
Azimuth: 161.6°
Direction: South-South-East
Celestial coordinates and finder chart of Brachium
Brachium is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Brachium are provided in the following table:
The simplified sky map below shows the position of Brachium in the sky:
Visibility of Brachium from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Today's Brachium - σ Librae (sigma Librae) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Distance of Brachium from the Sun and relative movement
Brachium is distant 291.85 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.
Spectral properties of Brachium
Brachium belongs to spectral class M3 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where Brachium is situated in the Hertzsprung–Russell diagram.
