The distance of Altair is listed as 16.8 light-years. Aldebaran / æ l ˈ d ɛ b ər ə n /, designated α Tauri (Latinized to Alpha Tauri, abbreviated Alpha Tau, α Tau), is an orange giant star about 65 light-years from the Sun in the zodiac constellation Taurus.It is the brightest star in Taurus and generally the fourteenth-brightest star in the night sky, though it varies slowly in brightness between magnitude 0.75 and 0.95. It is a normal, A-type, white main-sequence star which is around 1.63 bigger than the Sun, with 1.8 times its mass, and 10.6 times its brightness. Some 52 stellar systems beyond our own, the Solar System, currently lie within 5.0 parsecs (16.3 light-years) of the Sun.These systems contain a total of 63 stars, of which 50 are red dwarfs, by far the most common type of star in the Milky Way.Much more massive stars, such as our own, make up the remaining 13. Along with the stars Vega in Lyra constellation and Deneb in Cygnus, Altair forms the Summer Triangle, a prominent asterism in the northern hemisphere. At least two features of the star Altair make it distinctive. If you want that in miles, it is about 98,584,547,508,289.14, based on 1 Ly = 5,878,625,373,183.61 miles. I want to measure the distance between two nodes during a simulation. n. A very bright, variable binary star in the constellation Aquila, approximately 15.7 light years from Earth. Altair, Alpha Aquilae (α Aql), is a white main sequence star located at a distance of 16.73 light years from Earth in the constellation Aquila, the Eagle. Altair is a rapidly spinning star. The distance from Altair where an Earth-type planet would be "comfortable" with liquid water is centered around 3.3 AUs -- at the outer reaches of the Main Asteroid Belt's orbital distance in the Solar System. Altair is located 16.73 light years from Earth in the G-cloud, a huge interstellar cloud of gas and dust. Example: Calculate the distance in light years to the brightest star in the Northern celestial hemisphere, Arcturus (α Boötis) in the constellation of Boötes from its parallax value of 88.83 milliarcseconds. Also, while Altair is 1½ times larger than Earth's sun, Vega is more than three times larger. Altair, also called Alpha Aquilae, the brighest star in the northern constellation Aquila and the 12th brightest star in the sky. Altair, or Alpha Aquilae, is the brightest star in the constellation Aquila, the Eagle. With an apparent magnitude of 0.76, it is the brightest star in Aquila and the 12th brightest star in the sky.

Altair is the twelfth-brightest star in the night sky and one of the closest stars to Earth, at a distance of only 16.7 light-years.

First, Altair rotates rapidly.
Altair is only 16.8 light-years away from Earth, making it one of our nearest stellar neighbors. The distance of Altair is listed as 16.8 light-years. That's something like 1.1 million times the distance from the earth to the sun !

Altair appears to be on the main sequence, where stars still burn hydrogen in their cores, but it’s almost twice the Sun’s size and mass. It lies only 16.7 light years from Earth.