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The Trapezium Cluster is a component of the much larger Orion Nebula cluster, an association of about 2,800 stars within a diameter of 20 light years. [10] The Orion Nebula is in turn surrounded by the much larger Orion molecular cloud complex which is hundreds of light years across, spanning the whole Orion Constellation.
42 Orionis, also called c Ori, is a B1V magnitude star in the northern half of the Orion nebula. [3] Theta Orionis has a more central position in the nebula, and is actually composed of a multi-star system. [4] Iota Orionis is one of the brightest in the collection, in the south of the Orion nebula.
Messier 38 or M38, also known as NGC 1912 or Starfish Cluster, [4] is an open cluster of stars in the constellation of Auriga. It was discovered by Giovanni Batista Hodierna before 1654 and independently found by Le Gentil in 1749. The open clusters M36 and M37, also discovered by Hodierna, are often grouped together with M38. [5]
The Orion Nebula M42 with NGC 1980 on the right (right is south) NGC 1980 (also known as OCL 529, Collinder 72 and The Lost Jewel of Orion [6]) is a young open cluster associated with an emission nebula in the constellation Orion. It was discovered by William Herschel on 31 January 1786. [7]
The Trapezium or Orion Trapezium Cluster, also known by its Bayer designation of Theta 1 Orionis (θ 1 Orionis), is a tight open cluster of stars in the heart of the Orion Nebula, in the constellation of Orion. It was discovered by Galileo Galilei. On 4 February 1617 he sketched three of the stars (A, C and D), but missed the surrounding ...
Messier 41 (also known as M41 or NGC 2287) is an open cluster in the constellation Canis Major.It is sometimes referred to as the Little Beehive Cluster. [4] It was discovered by Giovanni Batista Hodierna before 1654 and was perhaps known to Aristotle about 325 BC. [5]
Messier 43 or M43, also known as De Mairan's Nebula and NGC 1982, is a star-forming nebula with a prominent H II region in the equatorial constellation of Orion.It was discovered by the French scientist Jean-Jacques d'Ortous de Mairan some time before 1731, [3] then catalogued by Charles Messier in 1769.
The projectile carried 88 M42/M46 grenade-like dual purpose submunitions. The grenades are very similar, but M42 side wall is optimized for fragmentation characteristics while M46s have thicker walls strengthened to withstand additional setback loads in the last three aft layers of the projectile, where they are placed.
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