There is a kind of perseverance called Vega. What constellation is Vega in and where is the celestial sphere?

Speaking of Vega, people are familiar with China's well-known myths and legends. On Valentine's Day in China, Cowherd and Weaver Girl will build Qixi Bridge. But beyond the myths and legends, in the starry sky at night, there is a perseverance called Vega, which is far away from Altair, and the two stars seem to have crossed the whole galaxy.

1. Which constellation is Vega in?

Vega belongs to Lyra. Vega is the brightest star in Lyra, ranking fifth in the night sky and the second brightest star in the northern hemisphere, second only to arcturus. Like Sirius and arcturus, it is one of the brightest stars near the sun, about 25 light-years away from the Earth. In summer in the northern hemisphere, most observers can see Vega with naked eyes near the zenith. Because of precession, Vega was the north star in the northern hemisphere around BC 12000, and will become the north star again in AD 14000, when the declination will reach +86 14', and it is actually a star very close to the earth.

2. Vega's celestial sphere

Vega and the stars of Lyra together form the appearance of Lyra, so Lyra is very famous. To see Vega, try to stay in the mid-latitude area of the northern hemisphere in summer, and Vega often appears near the zenith. But for the mid-latitude areas in the southern hemisphere in winter, Vega usually hangs on the northern horizon. In the area north of 5 1 N, Vega has been sitting on the horizon and turned into an arch star. Vega will be around midnight on July 1 day according to the celestial meridian, so it can appear at the zenith and be observed by the public.

3. The historical observation time of Vega

Meteorology and Vega have a lot of human history. Who told him that it is also a very bright planet in the night sky? Some people even call it "the second most important planet in the sky, second only to the sun". Vega is the first planet outside our solar system that we photographed. Vega is an ellipsoidal planet, the north pole is pale pink and the equatorial part of the earth is gray. Because of its fast rotation speed (Vega rotates once every 12.5 hours), the whole planet is flat, and there are four stars around Vega.