What constellation does Kakuchi belong to?

Virgo alpha star is the brightest star in Virgo and the 16 brightest star in the whole sky. Its English name is Spica, which means "ears of wheat". Kakuchi is a pair of spectral binary stars with massive dark companion stars, and it is also a near binary star. The apparent magnitude is 0.98 and the absolute magnitude is -3.5. 260 light years away. The main star is Cepheus beta variable, and its spectral luminosity type is B 1IV. The brightness varies from 0.95 to 1.05, and the dimming period is 4.0 14504 days (0: 00+0: 2 1.8 seconds on the 4th). The spectral luminosity of the companion star is B3V type.

Extend the bucket handle curve of the Big Dipper to the southeast, pass through arcturus, and then continue to meet the gladiators. Its distance from arcturus is approximately equal to the distance from arcturus to the end of the barrel handle. This curve from the Big Dipper bucket handle to Jiao Baoshi is called "Daquan Curve".

Kakuchi is 260 light years away from us, with a surface temperature of 20,000 degrees Celsius and a bluish-white light. In ancient China, Jiao Suyi was the first star on the first night of "Twenty-eight Hostels". Now, it slowly leaves the earth among the stars at a speed of 1.6 kilometers per second.

It is a bispectrum binary star and luminosity binary star with an orbital period of 4.0 145 days, and it is a dense binary star with a large mass. It is about 84 parsec (about 275 light years) away from us. The total variation of Kakuchi's apparent magnitude is 0.09 (1968), and the main reason for the change of light is the revolution of two aspherical sub-stars, that is, the change of ellipsoid binary stars. The secondary reasons for the change of light include the pulsation of stars. The pulsation period of a star is 0. 1738 days, which belongs to Cepheus beta variable star, and the amplitude of brightness and apparent velocity caused by pulsation is unstable. The inclination of the orbit plane of the binary star is about 659, the semi-major axis of the orbit is 27 times the radius of the sun, the eccentricity is 0. 13, and the motion period of the near-star point is143 for 20 years.