Alpha virgo

Virgo alpha star, known as "arcturus I" in ancient China, is the first star at the first night of the 28th Night (arcturus of the Oriental Dragon, two stars). A main bright star in the sky in spring is located at right ascension13h25m1.6s and declination-1 1 9' 40.6. The fifteenth bright star shines blue and white all day. The radius of arcturus is about 7.9 times that of the sun, the visual magnitude is 0.98, and the absolute magnitude is -3.6. The luminosity is 17800 times that of the sun, and the distance is about 275 light years. It is one of the shortest and brightest stars in the thermal sequence. Kakuchi is both a near binary star and a bispectrum binary star.

Follow the big horn, continue south along this curve, and walk for almost the same length, and you will find the horn. Alpha star (Shu Tian, Beidou-1) and gamma star (celestial pole, Beidou-3) connecting Ursa major extend seven or eight times, and Kakuqi can also be found.