Delta Orionis


Distance (Light Years) 920 ± 210
Apparent Magnitude 2.25
Color (B-V)-0.22

Names For This Star

This star is also known as Mintika. The name derives from the Arabic: Al Mintakah meaning "The Belt". The name is appropriate to the star's position as the westernmost star of Orion's belt. With this position the star is the first star of the belt to be seen as Orion rises.

Description of the Star

Minataka is a hot, blue O9.5II bright giant with a luminosity maybe 3000 times that of the sun. Burnham describes the star as an eclipsing binary with a period of 5.73 days. He suggests that the two components are nearly equal in size and type. The eclipses produce a light variation of 0.2 magnitudes. Spectral analysis suggests an orbit of small eccentricity with the primary star lying about 5 million miles from the center of mass of the system.

Burnham describes a C component located about 52.8 arc sec from A and B, that is, at a projected distance of about 15,000 AU or about 0.23 ly.

The Hipparcos Catalogue Mission has discovered a D component about 1.35 magnitude dimmer than the primary star and lying at an angular separation of 0.267 arc sec, that is, at a projected distance of about 75 AU or 1.9 times the distance between the sun and planet Pluto.

Other Designations For This Star


34 Orionis

Hipparcos Identifier (HIP Number)


Harvard Revised (HR Number)


Henry Draper Catalog (HD Number)


Bonner Durchmusterung (BD Number)

BD-00 983
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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