What constellation is the second day of September?

Libra, the best observation time is September 23rd-65438+1October 23rd. It is the seventh house of the zodiac, located in the southeast of Virgo. The four brightest 3m stars in the constellation, α, β, γ and σ form a quadrilateral, and the β star and the spring triangle form a big diamond. The visible latitude is between+65 and 90.

The stars in Libra have been recognized since ancient times, but Ptolemy did not regard them as independent constellations. In Ptolemy constellation, the star of Libra belongs to Scorpio's claw, Libra α is Scorpio's north claw, Libra β is Scorpio's south claw.

It was not until Caesar's time in the 1 th century that the Romans discovered that the sun moved to this constellation around the autumnal equinox, so they drew it independently. Due to the precession of the earth, the autumnal equinox has moved to Virgo in the west. Generally speaking, the sun runs in Libra every year from 1 65438+1October165438+1October 23rd.