Libra constellation lies in the southern sky. It is one of the 12 zodiac constellations. Its name means “the weighing scales” in Latin, and it is usually depicted as the scales held by the Greek goddess of justice Dike (or Astraea), represented by the neighbouring Virgo constellation.
Libra is the only zodiac constellation that represents an object, not an animal or a character from mythology. The four brightest stars in the constellation form a quadrangle. Alpha and Beta Librae mark the scales’ balance beam, and Gamma and Sigma Librae represent the weighing pans. Libra constellation is also home to HD 140283, popularly known as Methuselah, currently the oldest known star in the universe.
Libra constellation is represented by the symbol . It was first catalogued by the Greek astronomer Ptolemy in the 2nd century. Libra does not contain any first magnitude stars.
FACTS, LOCATION & MAP
Libra is the 29th constellation in size, occupying an area of 538 square degrees.
It lies in the third quadrant of the southern hemisphere (SQ3) and can be seen at latitudes between +65° and -90°.
Libra contains three stars with known planets and does not have any Messier objects.
The brightest star in the constellation is Zubeneschamali, Beta Librae, with an apparent visual magnitude of 2.61.
There is one meteor shower associated with the constellation, the May Librids.