Planet Earth
International Astronomical Union WGSN

IAU: Canes Venatici

Profile / Characteristics

English translationLatin declination and pronunciationsSize/ °²# stars
(visible)
the Hunting DogsCanes Venatici – CANE-eez (CAN-eez) ve-NAT-iss-eye
Canum Venaticorum – CANE-um (CAN-um) ve-nat-ih-COR-um
46559

Main Star (brightest one):

DesignationHIP numbername in IAU-CSNbrightness
α CVnHIP 63125Cor Caroli2.88 mag (V)

Our (modern) Explanation

Constellation of the two hunting dogs (of Bootes) was invented by Hevelius in the 1690s. Prior to Hevelius’s invention, this region of the sky was unnamed; there had been no ancient Greek constellation. Only two decades earlier, in the early 1660s, English royallist had named the lonely brightest star ‘Cor Caroli’.

Ancient Globes

depiction of this constellation on the Farnese Globe (2nd century CE)
depiction of this constellation on the Kugel Globe (1st century BCE)
depiction of this constellation on the Mainz Globe (2nd century CE)

Farnese Globe

Kugel Globe

Mainz Globe

Ancient Lore & Meaning

Aratus

Reference:
English translation by Douglas Kidd (1997).
Aratus: Phaenomena, Cambridge Classical Texts and Commentaries, Series Number 34

Online available: translation by Mair (1921) 

Pseudo-Eratosthenes

References:
French translation by:
Jordi Pàmias i Massana and Arnaud Zucker (2013). Ératosthènes de Cyrène – Catastérismes, Les Belles Lettres, Paris

English version in:
Robin Hard (2015): Eratosthenes and Hyginus Constellation Myths with Aratus’s Phaenomena, Oxford World’s Classics

Early Modern Interpretation

Contemporary

As one of their first tasks in the 1920s, the newly founded International Astronomical Union (IAU) established constellation standards. The Belgian astronomer Eugène Delporte was assigned to the task to define borders of constellations parallel to lines of declination and right ascension. They were accepted by the General Assembly in 1928. The standardized names and abbreviations had already been accepted in 1922 and 1925.  

current IAU-star chart
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