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Mintaka

File:Orion_Belt_2009-01-29.jpg · Wikimedia Commons · See Wikimedia Commons

EntityQ680341· pop 47· linked from 189 articles

Also known as Delta Orionis, Delta1 Orionis, Delta Orionis A, 34 Orionis, HD 36486, HR 1852, del Ori, 34 Ori

Mintaka , designation Delta Orionis (δ Orionis, abbreviated Delta Ori, δ Ori) and 34 Orionis (34 Ori), is a quintuple star system some 1,200 light-years from the Sun in the constellation of Orion. Together with Alnitak (Zeta Orionis) and Alnilam (Epsilon Orionis), the three stars form Orion's Belt, known by many names among ancient cultures. The star is located very close to the celestial equator. When Orion is near the meridian, Mintaka is the rightmost of the Belt's stars when viewed from the Northern Hemisphere facing south.

Wikidata facts

Radius
15.8
Image
Orion Belt.jpg
Show 14 more facts
spectral class
O9IISB
catalog code
ALS 14779
apparent magnitude
2.248773
radial velocity
36
right ascension
83.001667056
declination
-0.299095107
stellar rotational velocity
100
parallax
4.71
absolute magnitude
-4.99
right ascension component of proper motion
1
declination component of proper motion
-1
Commons category
Mintaka
effective temperature
30100
surface gravity
2040
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via Wikidata · CC0

~6 min read

Article

9 sections
Contents
  • Nomenclature
  • Observational history
  • System
  • Distance
  • Etymology and cultural significance
  • Orion's Belt
  • Namesakes
  • References
  • External links

Mintaka , designation Delta Orionis (δ Orionis, abbreviated Delta Ori, δ Ori) and 34 Orionis (34 Ori), is a quintuple star system some 1,200 light-years from the Sun in the constellation of Orion. Together with Alnitak (Zeta Orionis) and Alnilam (Epsilon Orionis), the three stars form Orion's Belt, known by many names among ancient cultures. The star is located very close to the celestial equator. When Orion is near the meridian, Mintaka is the rightmost of the Belt's stars when viewed from the Northern Hemisphere facing south.

The five stars form a hierarchy: Delta Ori A Delta Ori Aa, an eclipsing binary with an orbital period of 5.7 days Delta Ori Aa1, a single star Delta Ori Aa2, a single star Delta Ori Ab, which orbits Aa at a distance, with an orbital period of 152 years Delta Ori C, a binary star with an orbital period of 30 days, also known as HD 36485 Delta Ori Ca, a single star Delta Ori Cb, a single star

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