WebAlgol, also called Beta Persei, prototype of a class of variable stars called eclipsing binaries, the second brightest star in the northern constellation Perseus. Its apparent visual magnitude changes over the range of 2.1 to 3.4 with a period of 2.87 days. Even at its dimmest it remains readily visible to the unaided eye. The name probably derives from … http://stars.astro.illinois.edu/sow/algol.html
Algol - Beta Persei - β Per - The Demon Star freestarcharts.com
WebNov 12, 2024 · With magnitude 1.8 Mirfak at its center, and five other stars of magnitude 3 or greater, Perseus contains bright and notable signposts. Among them is Algol (Beta Persei), a well-known eclipsing variable that dims by a full magnitude for about 10 hours every three days. [The mythological Perseus,] the half-mortal son of Zeus, is one of the … haus hassley hagen
Algol – a bright star in the Perseus constellation
Algol / ˈ æ l ɡ ɒ l /, ... Thus Algol's magnitude is usually near-constant at 2.1, but regularly dips to 3.4 every 2.86 days during the roughly 10-hour-long partial eclipses. The secondary eclipse when the brighter primary star occults the fainter secondary is very shallow and can only be detected photoelectrically. See more Algol /ˈælɡɒl/, designated Beta Persei (β Persei, abbreviated Beta Per, β Per), known colloquially as the Demon Star, is a bright multiple star in the constellation of Perseus and one of the first non-nova variable stars to … See more An ancient Egyptian calendar of lucky and unlucky days composed some 3,200 years ago is said to be the oldest historical documentation of the discovery of Algol. The association of … See more Beta Persei is the star's Bayer designation. The name Algol derives from Arabic رأس الغول raʾs al-ghūl : head (raʾs) of the ogre (al-ghūl) (see "ghoul"). The English name Demon Star was … See more • Jaana Toivari-Viitala, egyptologist who contributed to understanding Ancient Egypt and the star See more Algol is a multiple-star system with three confirmed and two suspected stellar components. From the point of view of the Earth, Algol Aa1 and Algol Aa2 form an eclipsing binary because their orbital plane contains the line of sight to the Earth. The eclipsing binary … See more Historically, the star has received a strong association with bloody violence across a wide variety of cultures. In the Tetrabiblos, the 2nd-century astrological text of the Alexandrian astronomer Ptolemy, Algol is referred to as "the Gorgon of Perseus" and associated with … See more • "Algol 3". SolStation. Retrieved 31 July 2006. • "4C02517". ARICNS. 4 March 1998. Archived from the original on 10 February 2006. Retrieved 31 July 2006. See more WebJan 13, 2004 · The precision of each measurement is about 0.01 stellar magnitude. When two stars orbit each other in the plane of the observer, the combined brightness decreases when one member of the pair eclipses the other. ... (Algol) type of eclipsing binary stars. Fig. 1. Open in new tab Download slide (a) Brightness of a variable star (an eclipsing ... WebA star of magnitude +1 is one hundred times brighter than one of magnitude +6. According to apparent brightness, the stars from brightest to dimmest are Sol, Sirius, Achernar, and Algol. Our Sun is the brightest star in this constellation, whereas Algol is the dimmest. borderless travel card