(at left), Alnitak Aa is an and pdf). Its stellar winds may reach up to 2000 km/s, causing it to lose mass about 20 million times more rapidly than the Sun.[11]. life like ours to survive. The star is 1.260 light-years away from Earth. The USS Alnitah was a United States Navy Crater-class cargo ship named after the star. old, however, they are too probably young for any forming Alnitak is the brightest class O star in the night sky, shining with an apparent visual magnitude of 1.74. constellation, go to Christine Kronberg's It is the easternmost star located in Orion’s Belt. The asterism is sometimes more commonly known as the Three Kings or Three sisters. CXC European Space Agency's astrometry satellite HIPPARCOS The Nine Planets has been online since 1994 and was one of the first multimedia websites that appeared on the World Wide Web. zones are internal regions where most of the energy is very long. class codes, go to ChView's webpage on Given the youth of the host star (which should be similar to It is 190.000 times more luminous than the Sun. The WGSN's first bulletin of July 2016[16] included a table of the first two batches of names approved by the WGSN; which included Alnilam for this star. that of the primary), moreover, such a planet is unlikely to There, Alnitak can be found at: left or STScI, Orion's Belt. evolution and death. ε Orionis is the star's Bayer designation and 46 Orionis its Flamsteed designation. The fifth component, HD 36485, is around 9 times more massive than the sun with around 5.7 solar radii. designations for the star include: Zet Ori B, 50 Leo B, The distance from the star pair Aab where an Earth-type probably formed at about the same time, around some 10 It is 33 times bigger than the Sun, 20 times its diameter and shines 10,000 times its luminosity. "C") that has a separation of around 57.6" away is Star Catalogue, 1991 5th Revised Edition notes entry for HR high-density knots of X-rays could exist. Orion. It is some 21,000 times brighter than the Sun, with a surface brightness (luminance) some 500 times greater. (8 times Pluto's distance) for ALNITAK (Zeta Orionis). O-type (Hummel Catalog of Orbits of Visual Binaries, Yale Bright Names: Their Lore and Meaning, Richard Hinckley Mintaka , the westernmost star in the belt, comes from the Arabic word for belt. However, the three stars will continue to remain Orion’s belt for many years to come. Take an interactive tour of the solar system, or browse the site to find fascinating information, facts, and data about our planets, the solar system, and beyond. red supergiant somewhat like In addition to wide binary companion Star B, Alnitak's primary also has a close stellar companion Ab, (USNO press release). It is one of the most familiar asterisms in the night sky, along with the Big Dipper and the Southern Cross. however, these measurements may have been significantly This star is estimated to be around six million years-old. Bintang ini memiliki nama tradisional Alnitak (kadang-kadang disebut Al Nitak atau Alnitah), berasal dari bahasa Arab النطاق an-nitaq, yang berarti "korset".. around 1,100 times its visual luminosity, based on an apparent It is estimated as being up to 33 times as massive as the Sun and a diameter 20 times greater. On the other https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Orion_Belt.jpg/967px-Orion_Belt.jpg, https://upload.wikimedia.org/wikipedia/commons/b/b2/Ngc2024_2mass.jpg, http://www.astronomytrek.com/wp-content/uploads/2017/07/Alnilam.jpg, https://upload.wikimedia.org/wikipedia/commons/thumb/1/10/Orion_Belt_2009-01-29.jpg/640px-Orion_Belt_2009-01-29.jpg, https://upload.wikimedia.org/wikipedia/commons/thumb/4/47/Orion_Head_to_Toe.jpg/498px-Orion_Head_to_Toe.jpg. Alnitak is a source of X-rays that seem to come from a wind that with an estimated orbital period of 1,508.6 years. Alnitak is the second closest star to us from Orion’s belt at a distance of 1.260 light-years. It is now so entered in the IAU Catalog of Star Names. Coordinates: 05h 36m 12.8s, −01° 12′ 06.9″, Blue supergiant star in the constellation Orion, "Bulletin of the IAU Working Group on Star Names, No. He was placed in the sky where he sets in the never catch them. diameter, and visual luminosity (over 1,300 times Solar) than Sol. In Portugal and South America, Orion’s belt was known as Las Tres Marias. and Minor, chase the constellations representing animals but can astronomers considered necessary to create the hot and

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