Aldebaran

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Aldebaran

(ăl'dĕb`ərən), brightest star in the constellation TaurusTaurus
[Lat.,= the bull], in astronomy, constellation NW of Orion and lying on the ecliptic (the sun's apparent path through the heavens) between Gemini and Aries; it is one of the constellations of the zodiac.
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; Bayer designation α Tauri; 1992 position R.A. 4h35.5m, Dec. +16°30'. An orange giant star (spectral classspectral class,
in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically.
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 K5 III) with apparent magnitude averaging 0.85, it is one of the 20 brightest stars in the sky. Aldebaran is a visual binary starbinary star
or binary system,
pair of stars that are held together by their mutual gravitational attraction and revolve about their common center of mass. In 1650 Riccioli made the first binary system discovery, that of the middle star in the Big Dipper's handle, Zeta
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 and an irregular variable starvariable star,
star that varies, either periodically or irregularly, in the intensity of the light it emits. Other physical changes are usually correlated with the fluctuations in brightness, such as pulsations in size, ejection of matter, and changes in spectral type, color, or
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, with magnitudemagnitude,
in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the dimmest stars
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 ranging from 0.78 to 0.93. Its distance is 68 light-years. The name is from the Arabic meaning "follower (of the Pleiades)."
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Aldebaran

(al-deb -ă-răn) (α Tau) A conspicuous red giant that is the brightest star in the constellation Taurus and lies in the line of sight of but much nearer than the Hyades. It is a slow irregular variable. It has two companions: one of 11th magnitude at 122″ separation, the other of 13th magnitude at 30″. mv : 0.85 (var.); Mv : –0.3; spectral type: K5 III; radius (by interferometer): 45 times solar radius; distance: 18 pc.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Aldebaran

[al′deb·ə·rən]
(astronomy)
A red giant star of visual magnitude 1.06, spectral classification K5-III, in the constellation Taurus; the star α Tauri.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Chosen One and Alpha Tauri traded at respective lows of 2.22 and 2.5 despite setting suicidal fractions.
Topspeed DaveE dwards Alpha Tauri (4.50Southwell) Hasgainedallfourcareersuccessesover 7fherebutRicha rdG uest'ssix-year-old can continue his love affair with the trackovertoday 's1mtrip.
The four, Catalyze, Befortyfour, Alpha Tauri and Majuro, were all trained by John Balding for owner, football agent Willie McKay, until switching back to their previous handler Richard Guest on Tuesday afternoon.
Alpha Tauri and Majuro, who were due to race at Kempton's evening meeting, were withdrawn with self-certificates at lunchtime, having been the subject of considerable market support, the latter to as low as 3-1 after an initial 25-1 in a place.
Richard Guest, trainer of Mottley Crewe, Alpha Tauri and Dancing Freddy "Mottley Crewe is our main hope and he is in tremendous form at home.
Googling a runner Alpha Tauri 2.50 Southwell Alpha Tauri, more commonly known as Aldebaran, is a red giant star located in the zodiac constellation of Taurus some 65 light years (or 400 trillion miles) away from Earth.
Richard Guest, trainer of Best Trip and Alpha Tauri "Best Trip is in good form.
Owned by Middleham Park Racing, the 11-year-old won for the 20th time when he overhauled favourite Alpha Tauri to score by a length and a quarter under Adrian Nicholls.
Benandonner 2.20 Wolverhampton SP forecast Evens His fourth in the Lincoln Trial here last time sets a high standard and it's hard to know exactly what his two main market rivals Alpha Tauri (all his best form is on Fibresand) and Unlimited achieved with wide-margin wins in sellers last time.
Easiest winner of the day was Alpha Tauri, who scooted home 15 lengths clear in the seller under James Doyle and was retained by owner-trainer Frank Sheridan for 8,500gns.
Paddy Mathers was banned for three days for using his whip with excessive frequency on Topcroft, runner-up to Alpha Tauri in the seller.