Aldebaran

Alpha Tauribrightest starRohiniα Tauα Tau (Aldebaran)
Aldebaran, also designated α Tauri (Latinized to Alpha Tauri, abbreviated Alpha Tau, α Tau), is a red giant star located about 65 light-years from the Sun in the zodiac constellation Taurus.wikipedia
231 Related Articles

Bayer designation

Bayerdesignationdesignations
α Tauri is the star's Bayer designation.
(See 88 modern constellations for the genitive forms.) For example, Aldebaran in the constellation Taurus (the Bull) is designated α Tauri (pronounced Alpha Tauri), which means "Alpha of the Bull".

Taurus (constellation)

TaurusTauriTaurus constellation
Aldebaran, also designated α Tauri (Latinized to Alpha Tauri, abbreviated Alpha Tau, α Tau), is a red giant star located about 65 light-years from the Sun in the zodiac constellation Taurus.
At first magnitude, the red giant Aldebaran is the brightest star in the constellation.

Nakshatra

RohiniNakṣatraMagha
* In Hindu astronomy it is identified as the lunar mansion Rohini ("the red one") and as one of the twenty-seven daughters of Daksha and the wife of the god Chandra (Moon).

Occultation

occultedoccultsocculting
On 11 March AD 509, a lunar occultation of Aldebaran was observed in Athens, Greece.
Occultations of Aldebaran are presently only possible by the Moon, because the planets pass Aldebaran to the north.

List of brightest stars

brightest starsbrightest starone of the brightest stars
It is the brightest star in Taurus and generally the fourteenth-brightest star in the night sky, though it varies slowly in brightness between magnitude 0.75 and 0.95.

Sirius

SothisDog StarSirius B
This, as well as observations of the changing positions of stars Sirius and Arcturus, led to the discovery of proper motion.
The bright stars Aldebaran, Arcturus and Sirius were noted to have moved significantly; Sirius had progressed about 30 arc minutes (about the diameter of the Moon) to the southwest.

Asterism (astronomy)

asterismasterismsconstellation
* In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting Aldebaran, ε Tauri, δ 3 Tauri, δ 1 Tauri, γ Tauri, 71 Tauri and λ Tauri.
One-third of the 1st-magnitude stars visible in the sky (seven of twenty-one) are in the so-called Winter Hexagon with Capella, Aldebaran, Rigel, Sirius, Procyon, and Pollux with 2nd-magnitude Castor, on the periphery, and Betelgeuse off-center. Although somewhat flattened, and thus more elliptical than circular, the figure is so large that it cannot be taken in all at once, thus making the lack of true circularity less noticeable. (The projection in the chart exaggerates the stretching.) Some prefer to regard it as a Heavenly 'G'.

Arcturus

ArcturiansArcturianArcturan
This, as well as observations of the changing positions of stars Sirius and Arcturus, led to the discovery of proper motion. With a near-infrared J band magnitude of −2.1, only Betelgeuse (−2.9), R Doradus (−2.6), and Arcturus (−2.2) are brighter at that wavelength. In 1993, radial velocity measurements of Aldebaran, Arcturus and Pollux showed that Aldebaran exhibited a long-period radial velocity oscillation, which could be interpreted as a substellar companion.
Ptolemy described Arcturus as subrufa ("slightly red"): it has a B-V color index of +1.23, roughly midway between Pollux (B-V +1.00) and Aldebaran (B-V +1.54).

Delta3 Tauri

Delta³ Tauriδ 3 Tauri68 Tau
* In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting Aldebaran, ε Tauri, δ 3 Tauri, δ 1 Tauri, γ Tauri, 71 Tauri and λ Tauri.
In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting δ 3 Tauri, ε Tauri, δ 1 Tauri, γ Tauri, Aldebaran, 71 Tauri and λ Tauri.

Hyades (star cluster)

HyadesHyades clusterHyades star cluster
Since the star is located (by chance) in the line of sight between the Earth and the Hyades, it has the appearance of being the brightest member of the more scattered Hyades open star cluster that makes up the bull's-head-shaped asterism; however, the star cluster is actually more than twice as far away, at about 150 light years.
From the perspective of observers on Earth, the Hyades Cluster appears in the constellation Taurus, where its brightest stars form a "V" shape along with the still brighter Aldebaran.

Aldebaran in fiction

Aldebaranworks of fiction
The star also appears in works of fiction such as Far From the Madding Crowd and Down and Out in Paris and London.
Aldebaran (Alpha Tauri) is a type K5 giant star in the constellation Taurus that is frequently featured in works of science fiction.

Slow irregular variable

slow irregularirregular variable starirregular
Aldebaran is a slightly variable star, of the slow irregular type LB.

Gamma Tauri

γ Tauγ TauriGamma
* In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting Aldebaran, ε Tauri, δ 3 Tauri, δ 1 Tauri, γ Tauri, 71 Tauri and λ Tauri.
In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting of Gamma Tauri, Epsilon Tauri, Delta³ Tauri, Delta¹ Tauri, Alpha Tauri (Aldebaran), 71 Tauri and Lambda Tauri.

Zodiac

signs of the zodiactropical zodiaczodiacal signs
Aldebaran, also designated α Tauri (Latinized to Alpha Tauri, abbreviated Alpha Tau, α Tau), is a red giant star located about 65 light-years from the Sun in the zodiac constellation Taurus.

Delta1 Tauri

δ 1 TauriDelta¹ Tauriδ 1 Tau
* In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting Aldebaran, ε Tauri, δ 3 Tauri, δ 1 Tauri, γ Tauri, 71 Tauri and λ Tauri.
In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting of δ¹ Tauri, Epsilon Tauri, Delta³ Tauri, Gamma Tauri, Alpha Tauri (Aldebaran), 71 Tauri and Lambda Tauri.

Pioneer 10

10Pioneers 10Pioneer
The planetary exploration probe Pioneer 10 is currently heading in the general direction of the star and should make its closest approach in about two million years.
The Pioneer 10 trajectory is expected to take it in the general direction of the star Aldebaran, currently located at a distance of about 68 light years.

Proper motion

proper motionsproper-motionhigh proper motion star
This, as well as observations of the changing positions of stars Sirius and Arcturus, led to the discovery of proper motion.
Proper motion was suspected by early astronomers (according to Macrobius, AD 400) but a proof was not provided until 1718 by Edmund Halley, who noticed that Sirius, Arcturus and Aldebaran were over half a degree away from the positions charted by the ancient Greek astronomer Hipparchus roughly 1850 years earlier.

Epsilon Tauri

ε TauAinε Tauri
* In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting Aldebaran, ε Tauri, δ 3 Tauri, δ 1 Tauri, γ Tauri, 71 Tauri and λ Tauri.
In Chinese, 畢宿 (Bì Xiù), meaning Net, refers to an asterism consisting ε Tauri, δ 3 Tauri, δ 1 Tauri, γ Tauri, Aldebaran, θ 2 Tauri, 71 Tauri and λ Tauri.

Giant star

giantorange giantgiants
Aldebaran, also designated α Tauri (Latinized to Alpha Tauri, abbreviated Alpha Tau, α Tau), is a red giant star located about 65 light-years from the Sun in the zodiac constellation Taurus.
Aldebaran, a K-type giant

Magnitude (astronomy)

magnitudemagnitudesmag
With a near-infrared J band magnitude of −2.1, only Betelgeuse (−2.9), R Doradus (−2.6), and Arcturus (−2.2) are brighter at that wavelength.
For example, Sirius is magnitude −1.46, Arcturus is −0.04, Aldebaran is 0.85, Spica is 1.04, and Procyon is 0.34.

Orion (constellation)

Orionconstellation of OrionOrion constellation
By extending the line of the Belt southeastward, Sirius (α CMa) can be found; northwestward, Aldebaran (α Tau).

Stars in astrology

fixed starsgreat significanceparanatellonta
As the brightest star in a Zodiac constellation, it is also given great significance within astrology.
The two stars Aldebaran and Antares are said to produce stress when they transit one of the angles of the horoscope.

Orders of magnitude (length)

mmnmgigameter
61 Gm – Diameter of Aldebaran, an orange giant star (large star on right)

J band (infrared)

J bandJJ-band
With a near-infrared J band magnitude of −2.1, only Betelgeuse (−2.9), R Doradus (−2.6), and Arcturus (−2.2) are brighter at that wavelength.
The next brightest stars in the J band are Antares (−2.7), R Doradus (−2.6), Arcturus (−2.2), and Aldebaran (−2.1).

Pollux (star)

Polluxβ Gemβ Geminorum
In 1993, radial velocity measurements of Aldebaran, Arcturus and Pollux showed that Aldebaran exhibited a long-period radial velocity oscillation, which could be interpreted as a substellar companion.