Basically, if you ignore the C, D and E components as faint field stars Albireo is a quintuple star! It's unclear if Albireo A and B are actually a physical binary system. Is it a true binary or the result of a chance alignment? Albireo appears as a single star to the naked eye, but is in fact a binary system with two components that can be seen in a small telescope. Albireo is a binary star system consisting of a bright, yellow ("gold") star and a fainter, blue star (it is the official star of the University of California, Berkeley because of its gold and blue colors). Albireo is one of my favorite doubles. In 1976, using speckle interferometry it was discovered that Albireo A is a binary star itself. By: Bob King September 21, 2016. One of the great small-telescope showpieces of the sky, Albireo, the third-magnitude (3.0) Beta star of Cygnus, the Swan, is a magnificent visual double whose components (magnitudes 3.3 and 5.5) have contrasting golden and blue colors. The brighter of the two stars – designated Beta Cygni A or Beta 1 Cygni – appears yellow, while the fainter one – Beta Cygni B or Beta 2 Cygni – is blue. one of the great smalltelescope showpieces of the sky, albireo, the thirdmagnitude (.) You’ll need a scope to see the pair. A stunning double star, Albireo is also a bit of an enigma. In reality, Albireo is 385 light years away from the Earth. ALBIREO (Beta Cygni). It's also fun to show to people who think all stars are the same color. +5.1. I love the orange and blue colors. albireo, one of the sky's finest multiple stars, is not only beautiful but baffling. They had been considered as merely optical double, not orbiting around a common point as a true binary star system would be. The golden component is mag. +3.1, while the blue member is mag. Albireo is located about 430 light-years from the Earth. Albireo - a true binary star in which an orange giant star and a hot blue star revolve around each other at great distance. Albireo can be found high overhead in the northern hemisphere’s constellation Cygnus, the swan that gracefully rides the trail of the Milky Way across the sky. Diagram showing the location of Algol. Which of the following statements about Albireo must be true? The brightest star in the winter sky, Sirius, also has a companion ( an X-ray image of the Sirius pair is available at Astronomy Picture of the Day). Explore the Night with Bob King. Albireo is a lovely golden and blue double that’s a binary star system. If so, the orbital period would be at least 100,000 years. If it's in the sky when I have my telescope out, I'll look at it. If the two stars are a true binary system, their angular separation of 35 arcseconds would imply an orbital period of at least 100,000 years. Tale of … The 'W' of Cassiopeia is easily found in the Northern sky. 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