It is also not difficult to view Altair with the naked eye, since it forms one of the vertices of the famous Summer Triangle asterism, with the other two points marked by the stars Deneb in Cygnus and Vega in Lyra. With the bright stars Deneb and Vega, Altair (Arabic for “flying eagle”) forms the prominent asterism of the … Altair is a type-A main sequence star with approximately 1.8 times the mass of the Sun and 11 times its luminosity. This rapid rotation forces Altair … [4] For comparison, the equator of the Sun requires just over 25 days for a complete rotation.

The Star Altair is a white main sequence dwarf star of spectral and luminosity type A7 V-IVn. Altair is a bright star in the northern summer sky that is one of the three stars that form an astronomical asterism called the Summer Triangle. Deneb Deneb or Alpha Cygni (Alp Cyg) is the brightest naked eye star in the constellation Cygnus.With an apparent magnitude of 1.25v, Deneb is the 19th brightest star in the entire sky (see: 50 Brightest Stars ).Its absolute magnitude is -8.73 and its distance is 3230 light years..

Along with the stars Vega in Lyra constellation and Deneb in Cygnus, Altair forms the Summer Triangle, a prominent asterism in the northern hemisphere. [3][4] Altair possesses an extremely rapid rate of rotation; it has a rotational period of approximately 9 hours. Altair, also called Alpha Aquilae, the brighest star in the northern constellation Aquila and the 12th brightest star in the sky. Altair is a type-A main sequence star with approximately 1.8 times the mass of the Sun and 11 times its luminosity. Altair in Aquila can be seen from between latitudes of +90 and -75 , with August being the best month to see the bright star.

Altair, or Alpha Aquilae, is the brightest star in the constellation Aquila, the Eagle.It lies only 16.7 light years from Earth.

So while Altair is bigger than the Sun, it is not in the same category as Betelgeuse as an example of a giant star. The star has a visual magnitude of 0.77. Its mass is 1.8 times that of the Sun, which is a mid-sized star.