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Alnitak Aa compared to the Sun (to scale) Alnitak is a triple star system at the eastern end of Orion's Belt, the second-magnitude primary having a 4th-magnitude companion nearly 3 arcseconds distant, in an orbit taking over 1,500 years. The part called Alnitak A is itself a close binary, comprising the stars Alnitak Aa and Alnitak Ab.
Alnitak (ζ Orionis) is a triple star system at the eastern end of Orion's belt and is 1,260 light-years from the Earth. Alnitak B is a 4th-magnitude B-type star which orbits Alnitak A every 1,500 years. The primary (Alnitak A) is itself a close binary, comprising Alnitak Aa (a blue supergiant of spectral type O9.7 Ibe and an apparent magnitude ...
7th brightest star, triple star system; α Cyg variable: Betelgeuse: ... variable star, ΔV = 0.003 m, P = 1.60 d Alnitak B:
Alnilam is losing mass quickly, a consequence of its size. It is the farthest major star in Orion at 1,344 light years. Alnitak, meaning "the girdle", is designated Zeta Orionis, and is the easternmost star in Orion's Belt. It is a triple star system, with the primary star being a hot blue supergiant and the brightest class O star in the night sky.
Together with Mintaka and Alnitak, the three stars make up Orion's Belt, known by many names across many ancient cultures. Alnilam is the middle star. Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified, for the spectral class B0Ia. [5]
Alnitak on the Great Pyramid of Giza; Alnilam on the pyramid of Khafre; Mintaka on the pyramid of Menkaure; The Orion correlation theory is a fringe theory in Egyptology attempting to explain the arrangement of the Giza pyramid complex.
[4] [5] They are located near the star of Bellatrix. Orion OB1b - the three bright stars ζ Ori (Alnitak), ε Ori (Alnilam), and δ Ori (Mintaka) which make up the asterism known as "Orion's Belt", and minor stars. This group has an average age of approximately 8 million years and is further subdivided into three subgroups.
The Alpha Centauri star system is the closest star system to the Sun. List of nearest M-type stars This is a ... A subdwarf O star. Alnitak: