Alnitak B

Zeta2 Orionis


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

Description of the Star

Alnitak B is a blue B0III normal giant. The apparent separation of 2.4 seconds of arc between A and B corresponds to a projected distance of 600 AU between the two stars, about 15 times the radius of the solar system out to the orbit of Pluto.

Other Designations For This Star


50 Orionis

Hipparcos Identifier (HIP Number)

Harvard Revised (HR Number)


Henry Draper Catalog (HD Number)


Bonner Durchmusterung (BD Number)

BD-02 1338
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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