With the bright stars Deneb and Vega, Altair (Arabic for “flying eagle”) forms the prominent asterism of the … 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, 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.It lies only 16.7 light years from Earth.

[3][4] Altair possesses an extremely rapid rate of rotation; it has a rotational period of approximately 9 hours.

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.. This rapid rotation forces Altair … Its mass is 1.8 times that of the Sun, which is a mid-sized star. So while Altair is bigger than the Sun, it is not in the same category as Betelgeuse as an example of a giant star. Altair is a type-A main sequence star with approximately 1.8 times the mass of the Sun and 11 times its luminosity. 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. The star has a visual magnitude of 0.77.

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. The Star Altair is a white main sequence dwarf star of spectral and luminosity type A7 V-IVn. Altair is a type-A main sequence star with approximately 1.8 times the mass of the Sun and 11 times its luminosity.

Along with the stars Vega in Lyra constellation and Deneb in Cygnus, Altair forms the Summer Triangle, a prominent asterism in the northern hemisphere. [4] For comparison, the equator of the Sun requires just over 25 days for a complete rotation.