How far does Cowherd and Weaver Girl go?

How far does Cowherd and Weaver Girl go? 】 "Silver candle autumn light cold painting screen, light Luo small fan fluttering fluorescent. The night in Tianjie is cool as water. Sit and watch the morning cow and Vega. The Cowherd and Vega Bridge Club is a Chinese myth story from the pre-Qin Dynasty. The story comes from two stars, the Cowherd Star and the Vega Star.
"Altair" is the "Altair" River Drum II, also known as "Altair". Its diameter is 1.6 times the diameter of the sun. Its surface temperature is about 7000 degrees. It is silver white and its luminous ability is 8 times larger than that of the sun. Altair is 16 light-years away from Earth.
Vega, also known as Vega I or alpha Lyrae, is the brightest star in the constellation Lyrae, about 26 light-years from Earth. It is the first star to be photographed by humans outside the sun, and the first star to have a spectral record. Vega is 8 times the size and 1.5 times the weight of Altair, and its surface temperature is as high as 8900 C, which is nearly 2000 C higher than Altair.
The distance between "Altair" and "Vega" is about 16.4 light-years (about 160 trillion kilometers!! Because the speed of light is 3*10^5 km/s.
160000 000 000 000 000 /(3*10^ 5) = 5333333 (seconds)
= 148148 (hours) = 6172.8 (days) = 16.91 (years)! So Cowherd blinks, Weaver Girl will not see until 16.9 years later!!May the lover of the world not work so hard.