Alnitak A

Zeta1 Orionis

Alnitak

Distance (Light Years) 820 ± 160
Apparent Magnitude 1.74
Color (B-V)-0.21

Names For This Star

Another name for this star is Alnitah. The name of the star derives from the Arabic Al Nitak meaning "The Belt" or "The Girdle".

Description of the Star

Alnitak is a double star system. Alnitak A is a blue O9.7Ib supergiant star about 15 times the diameter of the sun, at least 11,000 times more luminous than the sun.

The companion is yellow in color. There is a third component, Alnitak C, almost one minute of arc away from A. This latter star, according to Burnham is probably not physically related to the A and B stars.

Other Designations For This Star


Flamsteed

50 Orionis

Hipparcos Identifier (HIP Number)

26727

Harvard Revised (HR Number)

1948

Henry Draper Catalog (HD Number)

37742

Bonner Durchmusterung (BD Number)

BD-02 1338
Smithsonian Astrophysical
Observatory compendium (SAO Number)
132444

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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