Libra (constellation)

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Libra
Libra
Click for larger image
List of stars in Libra
Abbreviation: Lib
Genitive: Librae
Symbology: the Scale
Right ascension: 15 h
Declination: −15°
Area: 538 sq. deg. (29th)
Main stars: 4, 6
Bayer/Flamsteed stars: 46
Stars known to have planets: 3
Bright stars: 2
Nearby stars: 2
Brightest star: Zubeneschamali (β Lib) (2.6m)
Nearest star: HD 131977 (19.3 ly)
Messier objects: 0
Meteor showers: May Librids
Bordering constellations: Serpens Caput
Virgo
Hydra
Centaurus (corner)
Lupus
Scorpius
Ophiuchus
Visible at latitudes between +65° and −90°
Best visible at 21:00 (9 p.m.) during the month of June


Libra (pronounced /ˈliːbrə/, Latin: weighing scale, symbol Libra.svg, Unicode ) is a constellation of the zodiac. It lies between Virgo to the west and Scorpius to the east. It once represented the claws of Scorpius.

Some features[change | edit source]

The brightest stars in Libra form a rectangle:

α and β Librae are the scales' balance beam, and γ and σ are the weighing pans.

σ Librae was formerly known as γ Scorpii even though it is well inside the boundaries of Libra. It was not renamed as σ Librae until 1851 (by Benjamin A. Gould).