A constellation like a harp _ a constellation with a harp

1, Vega's China name is Vega No.1; It and several other stars form a constellation called Lyra.

2. Vega, also known as Vega I or α (Lyra α, the brightest star in Lyra, is about 25 light years away from the earth.

3. Because of its extremely high rotation speed, it is obviously oblate, and the equatorial radius is larger than the polar radius by 19%.

4. In the myth of "Cowherd and Weaver Girl" in ancient China, the Weaver Girl is the granddaughter of the Emperor of Heaven, so it is also called Tiansun.

In summer in the northern hemisphere, most observers can see Vega with naked eyes near the zenith.

6. It was the North Star in the northern hemisphere around 12000 BC. Due to precession, it will become the north star again in 13727, when its declination will reach +86 14.

7. It is the first star photographed by human beings outside the sun, the first star with spectral records, and one of the first stars to estimate the distance through parallax measurement. It used to be the calibration baseline for measuring luminosity and brightness scales, and it is one of the stars used by UBV photometry system to define the average value. /kloc-in the 9th century, astronomer Zhan Sen designed the concept of apparent magnitude, which is defined as 0 magnitude of each band, that is, "Vega magnitude". Later, it was thought that Vega's luminosity was changing, so other standards were adopted, and its apparent magnitude was no longer 0.

8. It is the fifth brightest star in the night sky and the second brightest star in the northern hemisphere, second only to arcturus. Like arcturus and Sirius, it is one of the brightest stars near the sun.