WebDecember: Algol ("The Demon Star”) One variable star YOU can see tonight is Algol, or Beta Persei. Known to Arab astronomers in antiquity, they gave it the name “al Goul,” meaning “the Demon” or “the Evil One,” since it seemed to wink at them from time to time. The English astronomer John Goodricke is credited with determining ... WebAlgol is an eclipsing binary star system 93 light-years away as determined by the Hipparcos satellite. The main star is a B8 main-sequence star 3 times as large as our sun and the secondary star is a K2-type subgiant. …
Ancient Egyptian Papyrus Contains Earliest Record of
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 be discovered. Algol is a three-star system, consisting of Beta Persei Aa1, Aa2, and Ab – … 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 Algol with a demon-like creature ( 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 … 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 … See more • "Algol 3". SolStation. Retrieved 31 July 2006. • "4C02517". ARICNS. 4 March 1998. Archived from the original on 10 February 2006. Retrieved 31 … See more WebFrom Star Names and their Meanings By R.H.Allen 1899 Myths and history about the Star. jean turon
EarthSky Algol the Demon Star of Perseus
WebThe Algol eclipse: every 69 hours, Algol's yellow component crosses in front of its blue companion star. This event reduces the star's brightness by more than a magnitude, an effect that lasts for four hours. The Arabs gave the name 'Algol' ('The Demon') to this blue dwarf star, almost certainly because it is one of the most variable stars in ... WebEl Foro de Astrodienst es parte del sitio de la web de Astrodienst y está abierto a todos los usuarios registrados. En el foro usted puede discutir temas astrológicos y brindar feedback sobre los productos y servicios de Astrodienst así como del sitio de la web www.astro.com. WebAlgol. 변광성 (Beta Persei)은 페르세우스자리에 있는 별로, 14세기 후반에 아랍어 al-ghul "악마"에서 유래한 "악마"를 뜻하는 단어입니다 (자세한 내용은 ghoul참조). 현대적인 페르세우스자리의 표현에서는 페르세우스가 들고 있는 고르곤의 머리에 해당하지만, 아마도 다른 밝은 별들과 구별되는 3일마다 ... jean tx population