eclipsing variable star

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eclipsing variable star

[i′klips·iŋ ¦ver·ē·ə·bəl ′stär]

(astronomy)

A binary star whose orbit is such that every time one star passes between the observer and its companion an eclipse results. Also known as eclipsing binary; photometric binary.

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Can you catch Beta Persei, the famous eclipsing variable star Algol, in one of its eclipses?

Algol in the northeast

UT 3 3:38 3 16:33 6 0:26 6 13:21 8 21:15 9 10:10 11 18:04 12 6:58 14 14:52 15 3:47 17 11:41 18 0:35 20 8:30 20 21:24 23 5:18 23 18:13 26 2:07 26 15:01 28 22:55 29 11:50 31 19:44 The bright eclipsing variable star Algol (Beta Persei) is now up in the east late at night.

Three blood drops on the Swan's wing

Every 2 days 20 hours 49 minutes, the eclipsing variable star Algol (Beta Persei) fades from magnitude 2.1 to 3.4.

A pulsing star by the dipper

EVERY 2 DAYS 20 hours 49 minutes, the eclipsing variable star Algol ([beta] Persei) is at its dimmest, magnitude 3.4 instead of its usual 2.1.

Minima of Algol

About every 2 days 20 hours 49 minutes, the eclipsing variable star Algol ([beta] Persei) is at its dimmest, magnitude 3.4 instead of its usual 2.1.