| |
| |
Albireo (Site not responding. Last check: 2007-10-24) |
 | | The brighter yellow-colored member, Albireo A, is a much closer double made of a third magnitude (3.3) class K (K3) stable helium-fusing bright giant and a hotter but dimmer (magnitude 5.5) class B (B9) hydrogen-fusing dwarf, the two stars not readily separable in the telescope. |
 | | The visually-seen blue star, Albireo B, is similar to Albireo A's companion, and is a class B (B8) dwarf with a temperature of 12,100 Kelvin, a luminosity of 190 Suns, and a mass of 3.3 solar. |
 | | From Albireo B, Albireo A would appear as brilliant orbiting orange and blue points about half a degree apart, the K giant shining with the light of 35 full Moons, the close class B companion at about half of that. |
| www.astro.uiuc.edu /~kaler/sow/albireo.html (499 words) |
|