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Beta Persei synonyms, Beta Persei pronunciation, Beta Persei translation, English dictionary definition of Beta Persei. n. A binary, eclipsing variable star in the constellation Perseus, almost as bright as Polaris.
Eta Persei (η Persei, abbreviated Eta Per, η Per), is a binary star and the 'A' component of a triple star system (the 'B' component is the star HD 237009) [8] in the constellation of Perseus. Parallax measurements by the Gaia spacecraft imply that it is 1,000 is light-years away from Earth. [1]
(The Roche lobe is the space around a star in a binary system within which orbiting material is gravitationally bound to the star. If the star expands beyond this region, the material can escape its gravitational pull.)
Search for Greek words and definitions in the Perseus Digital Library, a comprehensive collection of classical texts and resources.
10 wrz 2020 · 34 Persei is a binary star located at around 540 light-years away from us. It has a combined apparent magnitude of 4.67. The primary star is a B-type main-sequence star. The primary star, 34 Persei, has around 690% of our Sun’s mass, 310% of its radius, and it is 671 times brighter than our Sun.
The constellation of Perseus is encircled clockwise by Cassiopeia, Andromeda, Triangulum, Aries, Taurus, Auriga, and Camelopardalis. Several of the stars in Perseus are of interest— Algol as a prototype of an eclipsing binary, Mirfak for its brightness, and Persei as a double variable.
Algol / ˈ æ l ɡ ɒ l /, [12] 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.
