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An eclipsing binary star is a binary star system in which the orbital plane of the two stars lies so nearly in the line of sight of the observer that the components undergo mutual eclipses. [20] In the case where the binary is also a spectroscopic binary and the parallax of the system is known, the binary is quite valuable for stellar analysis.
LL Aquarii is an eclipsing binary star system in the equatorial constellation of Aquarius, abbreviated LL Aqr.At peak brightness it has a combined apparent visual magnitude of 9.23, [1] which is too dim to be visible to the naked eye.
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, Algol). An Algol binary is a system where both stars are near-spherical such that the timing of the start and end of the eclipses is well-defined.
The following is a list of variable stars that are well-known, ... Eclipsing binary Algol type (EA/GS) R Aur: Auriga 6 m.7 13 m.9 7.2: 458 d Mira variable (M)
In astronomy, a contact binary is a binary star system whose component stars are so close that they touch each other or have merged to share their gaseous envelopes. A binary system whose stars share an envelope may also be called an overcontact binary. [1] [2] The term "contact binary" was introduced by astronomer Gerard Kuiper in 1941. [3]
Alpha Coronae Borealis is a binary system, its stars orbiting each other in an eccentric orbit every 17.36 days. Because the plane of this orbit is inclined at an angle of 88.2° to the line of sight to the Earth, [8] the pair form a detached eclipsing binary system similar to Algol (β Per). The periodic eclipses result in a magnitude ...
This is an eclipsing binary variable, first identified by the Northern Sky Variability Survey survey in 2004 [4] and given its variable-star designation BX Trianguli in 2010. Both stars in the system eclipse each other as seen from Earth, causing the brightness of the system to drop from a magnitude of 12.35 to 12.6/12.7 on the secondary ...
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