Variable star Algol
Algol /ˈælɡɒl/, designated Beta Persei known colloquially as the Demon Star, is a bright multiple star in the constellation of Perseus and one of the first ...
Algol the Demon Star … but why is it called that? - EarthSky
Therefore, when the dimmer of the two stars swings in front of the brighter star, we see Algol at minimum brightness. Animated diagram: large ...
Variable star Algol, the "Demon Star"
The star Algol is one of the most famous variable stars in the sky. Its variability earned it the nickname of the "Demon Star." The image at left was taken ...
Algol variables or Algol-type binaries are a class of eclipsing binary stars that are similar to the prototype member of this class, β Persei (Beta Persei, ...
A history of star Algol, the winking 'Demon Star' in Perseus
Ask any astronomer to name the most famous variable star in the sky and many will say Algol, the eclipsing binary in Perseus whose ...
Binary Variable Star Algol - Fort Lewis College
The binary star Algol is one of the most famous eclipsing binary stars in our night sky. Algol is useful because of its clockwork dimming every 2.87 days.
One of the reasons for this is that it is a star which can be observed with the unaided eye. Another reason is because it has a relatively short period of less ...
Watch Algol, the 'Demon star of Perseus,' get eclipsed by its stellar ...
Algol is about 90 light-years away. The two components are about the same size but unequal in luminosity. The slightly smaller, blue star is ...
Meet Algol, the Demon Star - Sky & Telescope
Variable star? Yes: eclipsing binary star system with a third, farther-out companion. Exoplanets status, None known. Probable fate, White dwarf ...
Guide to Algol (Beta Persei) - Variable Star Section
An eclipsing variable whose brightness changes can be followed using the naked eye. The brightness changes of Algol have been known about for over a ...
Algol - β Persei (beta Persei) - Star in Perseus | TheSkyLive.com
Algol, also designated as β Persei, is a variable and multiple main-sequence star of magnitude 2.12 in the constellation of Perseus.
Algol, the "Demon Star" - Cosmic Pursuits
Algol, the second brightest star in the northern constellation Perseus, is the finest example of an eclipsing variable star in the entire sky.
The Algol Star - Features and Facts About The Demon Star
Algol has an apparent magnitude of between 2.12 and 3.5, making it a second/third magnitude Star, ...
Algol - Eclipsing Variable Star in Perseus - Constellation Guide
Algol is one of the best known variable stars in the sky and a prototype for a class of eclipsing variable stars known as Algol variables. It is ...
The Demon and the Wonder: Variable Stars | Museum of Science
They're also the home constellations of a couple of special stars, Mira in Cetus and Algol in Perseus. These two stars are what are known as variable stars, ...
Algol - Beta Persei - β Per - The Demon Star - freestarcharts.com
Algol is a bright eclipsing binary system located in the northern constellation of Perseus and one of the best-known variable stars in the sky.
Algol, January 1999 Variable Star Of The Month - Astronomy in Hawaii
Algol is one of the most popular and well known variable stars in the sky. One of the reasons for this is that it is a star which can be observed with the ...
This Month in Astronomical History
In this column from the AAS Historical Astronomy Division, we focus on Algol — the well-known variable star that changes every 2.867 days.
Minima of Algol - astropical.space
Select a Variable Star: Algol (Beta Persei), Beta Lyrae *, Chi² Hydrae ... Star Information. Algol - Eclipsing binary (prototype star Algol) RA (J2000): ...
Ancient Egypt Discovered Variable Stars A Thousand Years Before ...
Ancient Egyptian astronomers may have discovered variable stars, and calculated the period of a well-known one called Algol, thousands of years before ...
Variable star
A variable star is a star whose brightness as seen from Earth changes systematically with time. This variation may be caused by a change in emitted light or by something partly blocking the light, so variable stars are classified as either:
Algol
StarAlgol, designated Beta Persei, 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 variable
Algol variables or Algol-type binaries are a class of eclipsing binary stars that are similar to the prototype member of this class, β Persei.
Stellar designations and names
In astronomy, stars have a variety of different stellar designations and names, including catalogue designations, current and historical proper names, and foreign language names.