Alpha Canis Minoris


Distance (Light Years) 11.41 ± 0.04
Apparent Magnitude 0.4
Color (B-V)0.42

Names For This Star

Procyon is the Greek name for Alpha Canis Minoris from the earliest times. In English the meaning of the Greek roots would be something like "Before (or in Front of?) the Dog." The star was sometimes referred to in Latin as Antecanis, which, according to Allen is equivalent to "Procyon".

Other names for the star are Elgomaisa or Algomeysa which are derived from the Arabic name Al Shi'ra Shamiyyah, meaning "The Northern Sirius."

Description of the Star

Procyon is a yellowish F5IV-V subgiant to main sequence star 7 times as luminous as the sun and with twice the sun's diameter.

Procyon is a binary star system with the bright star as the primary. Procyon B is a 10th magnitude star separated by about 4.5 arc sec from the A star, that is, about 16 AU away from the star. The orbital period is 40.65 years.

Other Designations For This Star


10 Canis Minoris

Hipparcos Identifier (HIP Number)


Harvard Revised (HR Number)


Henry Draper Catalog (HD Number)


Bonner Durchmusterung (BD Number)

BD+05 1739
Smithsonian Astrophysical
Observatory compendium (SAO Number)

Fundamental Katalog (FK5 Number)



Copyright © 1998 - 2010 by Arnold V. Lesikar,
Professor Emeritus
Dept. of Physics, Astronomy, and Engineering Science,
St. Cloud State University,St. Cloud, MN 56301-4498

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