1989101What constellation was born on October 23rd?

Libra, also translated as Libra (English name: Libra), was born on September 23rd-65438+1October 23rd. Located in the east of Virgo and the west of Scorpio, it is the seventh house of the zodiac.

In the southeast of Virgo, the four brightest 3m stars α, β, γ and σ in the constellation form a quadrilateral, and the β star and the Spring Triangle form a big diamond, so you can find this constellation.

Latitude varies between +65 and? It is completely visible between 90 degrees. Libra is a sign symbolizing the coming of autumn, which is manifested in Libra's special sense of smell for congenial feelings.

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 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.

Extended data

Libra (Latin: Libra, astronomical symbol:) 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.

Beta star and spring triangle form a big diamond. The middle name of Libra beta star is "zubeneschamali", which 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.

Important main star

Libra α (Zubenelgenubi) and Zubenelgenubi (South Claw) are two visual binaries, which are composed of α 1 with brightness of 5.2 and α2 with brightness of 2.8, showing blue and white.

Libra Zubeneschemali and Zubeneschemali (North Claw), a blue dwarf with a spectral classification of B8 and an apparent magnitude of 2.6, are the only green stars visible to the naked eye.

Libra σ (70%), Zubenelakrab (scorpion's claw), eclipse star. Although Libra σ is in Libra, not on the boundary of Libra, it was previously called Scorpio γ, and it didn't become Libra σ until AD 185 1 year (Benjamin Gould answered).

Libra δ (Pleiades Zeng Yi), also known as South Australia, is an eclipsing binary star like Perseus β. Eclipsing binary stars are two stars that periodically eat each other. From the perspective of the earth, their brightness will change. The magnitude variation of Libra δ is +4.8 to +5.9, and the light variation period is 2.3 days.

Libra μ (Pleiades Plus Five) consists of two stars with brightness of 5.7 and 6.7 respectively.

Libra (Pleiades II), a complex multi-star, is 4.5 stars to the naked eye.