Which three stars make up the Spring Triangle?

The three bright stars are Emperor I of Leo, Arcturus I of Virgo and arcturus of Patriarch.

1, Leo is located between Virgo and Cancer, with Ursa major and Leo minor in the north, Ophiuchus, sextant and Grand Duke in the south and the back row in the west.

Leo is a bright constellation, which is easy to recognize in the starry sky in spring. Among them, Xuanyuan XIV (Leo α), Xuanyuan XIII (Leo η), algie Ba (Leo γ), Xuanyuan XI (Leo ζ), Xuanyuan X (Leo μ) and Xuanyuan IX (Leo ε) form a sickle (or inverted question mark) structure from south to north, representing the head, neck and mane of the lion.

3. One of the emperors (Leo β), arcturus of Capricorn and Bumblebee of Virgo form an equilateral triangle, which is called "Spring Triangle". These three stars and cor caroli of Canis constitute the Big Spring Diamond.

Extended data

A pentagon consisting of several stars with medium brightness looks like a big kite. The brightest arcturus in this constellation (apparent magnitude is-0.04m) looks like a bright lamp hanging under a kite. Arcturus is one of the three brightest stars in the northern sky (the other two are Vega and Capella), and people call it "the most beautiful star among all the stars".

The ancient Greeks imagined the map of the patriarch as a fierce hunter, with a spear in his right hand and a high left hand, eager to catch the big bear in front of him. Every day in late spring and early summer, the patriarch is above our heads, which is the time when young hunters are full of ambition and the most proud.

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