What constellation is Gregorian calendar101October 22nd?

Gregorian calendar 65438+1October 22nd is Libra.

Libra, September 23rd-65438+1October 23rd, is one of the zodiac signs and one of the Ptolemaic constellations. Between Virgo and Scorpio, there are more than a dozen galaxies in this constellation that can be seen with 8-inch (20 cm) or larger telescopes. The four brightest stars in the constellation, α, β, γ and σ form a quadrilateral, and β and the spring triangle form a big diamond. Libra beta, whose middle name is "zubeneschamali", is the only star with green 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, 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.

People regard the stars 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 drawn 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.

Refer to Baidu Encyclopedia-Libra