100 1 What constellation _ 100 1 What constellation is it?

When was Libra born? 100 1 Libra was born.

Libra was born from September 23rd to 65438+1October 23rd.

Libra is one of the zodiac and Ptolemy constellations. The starry sky lies between Virgo and Scorpio. The four brightest stars in Libra, α, β, γ and σ, form a quadrilateral, and the β star and the spring triangle form a big diamond. Libra beta star, whose Chinese name is "zubeneschamali", is the only green star visible to the naked eye all day. Libra alpha star "zubenelgenubi" is a binary star, which is composed of α 1 with brightness of 5.2 and α2 with brightness of 2.8, and appears blue and white.

Extended data:

The stars in Libra have been recognized since ancient times, and people regard them as a steelyard, symbolizing fairness. But it wasn't until Caesar's time in 1 century that the Romans discovered that when the sun moved to this constellation, it was around the autumnal equinox, so it was painted independently.

Now, due to the precession of the earth, the autumnal equinox has moved to Virgo in the west. In the present era, the sun runs from 1 65438+1October1to165438+/October 23rd every year.

Baidu encyclopedia-Libra