what type of star is altair
Stars of this spectral type have a surface temperature of about 8000 to 9000 degrees Centigrade, a diameter about twice that of the Sun and a luminosity about 11 or 12 Suns. Altair is a A7IV-V subgiant star based on the spectral type that was recorded in the Hipparcos star catalogue. Altair Facts. 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. The Altair star has an apparent magnitude of 0.77, it has an absolute magnitude of 2.3, and has a b-v of 0.22. Altair can be found in the Milky Way galaxy. Star. [A scanned copy can be viewed on this webpage] Alpha (α) Aquila, Altair, is a pale yellow star in the neck of the Eagle. First magnitude (0.77) Altair, the 12th brightest star in the sky and the Alpha star of Aquila the Eagle, is also the southern anchor of the famed Summer Triangle, which it makes with Vega and Deneb.The Arabic name "Altair," reflective of the constellation itself, comes from a phrase meaning "the flying eagle." ALTAIR (Alpha Aquilae). Altair appears to be on the main sequence, where stars still burn hydrogen in their cores, but itâs almost twice the Sunâs size and mass. The mass of Altair is 2 times the mass of our sun. Altair is an A-type main sequence star with 1.8 times the mass of the Sun. Altair, or Alpha Aquilae, is the brightest star in the constellation Aquila, the Eagle. It lies only 16.7 light years from Earth. Because of this fast spinning motion, Alpha Aquilae is oblate in shape, meaning its equator is about 20 percent larger in diameter than its polar regions. from p.59 of Star Names, Richard Hinckley Allen, 1889. Classified as an A-type main-sequence star, and located 16.7 light-years from Earth, Altair is one of the few stars for which a resolved image of measurable nonzero extent has been obtained. The history of the star: Altair. Along with the stars Vega in Lyra constellation and Deneb in Cygnus, Altair forms the Summer Triangle, a prominent asterism in the northern hemisphere. The Star Altair Here is the star Altair. What is the mass of the star? What galaxy is Altair found in? Powered by Create your own unique website with customizable templates. Altair / æ l Ë t ÉÉr /, designated α Aquilae (Latinised to Alpha Aquilae, abbreviated Alpha Aql, α Aql), is the brightest star in the constellation of Aquila and the twelfth brightest star in the night sky.It is currently in the G-cloudâa nearby interstellar cloud, an accumulation of gas and dust. Altair's surface temperature is about 7,700 K. Altair is the brightest star in the constellation Aquila. The mass of Altair is between 1.7 and 1.8 times the mass of our sun. It is also a rapid rotator completing a rotation on its axis every nine hours (the Sun takes 25 days). The surface temperature of the star is Altair is a main star in the constellation Aquila and makes up the constellation outline. Altair has a spectral type of A7 so it has the color of white. It possesses an extremely rapid rotation rate of 210 kilometers per second at its equator which translates into rotational period of approximately 9 hours. Wit the Altair star being 1.7 times the mass of the sun the process will probably take a longer time then 10 billion years. Altair is a type-A main sequence star fusing hydrogen into helium in its core. For comparison, the Sun requires just over 25 days for a complete rotation at its equator. ; Based on the spectral type (A7IV-V) of the star, the star's ⦠ائر (an-nasr aá¹-á¹Äâir) which means the flying eagle. Altair is 10.6 times brighter than the Sun. 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