Auriga (constellation)

Infobox Constellation
name = Auriga
abbreviation = Aur
genitive = Aurigae
symbology = the Charioteer
RA = 6
dec= +40
areatotal = 657
arearank = 21st
numbermainstars = 5, 8
numberbfstars = 65
numberstarsplanets = 6
numberbrightstars = 4
numbernearbystars = 3
brighteststarname = Capella (α Aur)
starmagnitude = 0.08
neareststarname = HD 37394
stardistance = 39.92
numbermessierobjects = 3
meteorshowers = Alpha Aurigids
Delta Aurigids
bordering = Camelopardalis
latmax = 90
latmin = 40
month = February

Auriga (IPAEng|ɔːˈraɪgə, [OED] _la. charioteer) is a northern constellation. It was one of the 48 constellations listed by Ptolemy, and counts as one of the 88 modern constellations. Its brightest star is Capella, which is associated with the mythological she-goat Amalthea. The stars ζ Aurigae and η Aurigae are called "Haedi" (the Kids).

Notable features

ε Aurigae and ζ Aurigae are peculiar binary stars. The orbital period of ε Aurigae is approximately 27 years, with an eclipse duration of about 18 months. The visible companion is a yellowish F-class supergiant. The type of the other star is not known. ζ Aurigae has a period of 970 days, the primary is a K-class supergiant and the secondary is a B-class main sequence star. Both these systems present a rare stage of binary evolution, as the components are in a short and active evolutionary stage..

Notable deep sky objects

Auriga has many open clusters and other objects because the Milky Way runs through it. The three brightest open clusters are M36, M37 and M38, all of which are visible in binoculars or a small telescope in suburban skies. A larger telescope resolves individual stars. The clusters are about 4100, 4400, and 4200 light years distant, respectively. Their apparent visual magnitudes are 6.3, 6.2, and 7.4, respectively.

Three other open clusters are NGC 2281, lying close to ψ7 Aurigae, NGC 1664, which is close to ε Aurigae, and IC 410 (or NGC 1893), a cluster with nebulosity next to IC 405, the Flaming Star Nebula, found about mid-way between M38 and ι Aurigae. AE Aurigae, a runaway star, is a bright variable star currently located within the Flaming Star Nebula.

Named Stars


According to one Greek myth, Hera had a child who was born lame. Disgusted, she threw him out of Heaven to Earth, where he became the famous lame smith, Hephaestus, who fashioned beautiful ornaments and armor for the gods. He is also the smith who came to Orion's rescue after Orion had been blinded. It is said that because he was lame he invented the chariot so as to easily travel wherever he wanted to go without difficulty. He also built a chariot for Helios.

In another Greek myth, Auriga is said to represent Myrtilus, the charioteer of King Oenomaus. The king was jealous of anyone who came to seek his daughter's hand in marriage. Being noted for his love of horses, the king announced that all suitors would have to take part in a chariot race against him and, should they lose, pay with their lives. Pelops, the lover of Oenomaus' daughter, bribed Myrtilus to sabotage the king's chariot to guarantee his marriage with Hippodameia. Upon the day of the race, the king was killed in the ensuing accident. Shortly thereafter, Myrtilus tried to seduce Hippodameia as he was secretly in love with her. She ran crying to Pelops who then cursed Myrtilus by casting him into the sea. As Myrtilus drown, he in turn cursed Pelops, which was the source of the curse that forever haunted the future generation of Pelops' children.

Auriga might also represent the 10th Labour of Heracles. Together with the area of the sky that is deserted (now considered as the new and extremely faint constellations Camelopardalis and Lynx), and the other features of the area in the Zodiac sign of Gemini (i.e. the Milky Way, and the constellations Gemini, Orion, and Canis Major), this may be the origin of the myth of the cattle of Geryon, which forms one of The Twelve Labours of Heracles.

Before the classical era, it was also identified as a chariot and its driver, which, considering its fainter stars visible to the naked eye, it resembles. However, the driver was considered to be a shepherd, usually one which had flung a goat over its left shoulder (due to the resemblance of that area to a lump), and had its kids (two bright stars) nearby.

Graphic visualization

The stars of the constellation Auriga can be connected in an alternative way, which graphically shows the charioteer's head wearing a pointy cap and facing towards Perseus.

Stars α Aur (Capella), β Aur, θ Aur, ι Aur, and ε Aur form the charioteer's head: with α Aur being of magnitude zero, β Aur being of magnitude two, and the rest of the stars being of magnitude three. Star α Aur may be taken to represent the charioteer's eye, whereas star ι Aur represents the charioteer's chin.

Stars β Aur, δ Aur, and α Aur form the charioteer's pointy cap, with δ Aur being the top of the cap.

Finally, the stars α Aur, ε Aur, ζ Aur, and η Aur form the charioteer's nose: η Aur being of the third magnitude.


* H. A. Rey, "The Stars — A New Way To See Them". Enlarged World-Wide Edition. Houghton Mifflin, Boston, 1997. ISBN 0-395-24830-2.
* Ian Ridpath and Wil Tirion (2007). "Stars and Planets Guide", Collins, London. ISBN 978-0007251209. Princeton University Press, Princeton. ISBN 978-0691135564.
* Richard Hinckley Allen, "", New York, Dover.

ee also

* Psi Aurigae
* Telescopium Herschelii

External links

* [ The Deep Photographic Guide to the Constellations: Auriga]
* [ The clickable Auriga]
* [ "WIKISKY.ORG": Auriga]
* [ Star Tales – Auriga]

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