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NGC 2023 is an emission and reflection nebula in the equatorial constellation of Orion. It was discovered by the German -born astronomer William Herschel on 6 January 1785. This reflection nebula is one of the largest in the sky, [ 4 ] with a size of 10 × 10 arcminutes . [ 3 ]
IC 434 is a bright emission nebula in the equatorial constellation of Orion.It was discovered on February 1, 1786 by German-British astronomer William Herschel. [2] The nebula is located at a distance of approximately 1,260 ly (385 pc) from the Sun and spans the interior of a neutral hydrogen shell with an angular size of 2° × 4°.
The Horsehead Nebula (also known as Barnard 33 or B33) is a small dark nebula in the constellation Orion. [2] The nebula is located just to the south of Alnitak , the easternmost star of Orion's Belt , and is part of the much larger Orion molecular cloud complex .
Flame Nebula (NGC 2024) IC 434, which contains the Horsehead Nebula; The Horsehead Nebula (Barnard 33) M78, a reflection nebula (NGC 2068) McNeil's Nebula is a variable nebula discovered in 2004 near M78; Orion East Cloud (LDN 1621 + LDN 1622) HH 24-26 this group contains three Herbig–Haro objects; HH 111 one of the most well-known Herbig ...
The Horsehead Nebula, in the constellation Orion, is 1,300 light-years away. Webb’s latest infrared images released Monday captured the top of Horsehead in greater detail, illuminating clouds of ...
The image of the Horsehead Nebula captures the iconic nebula in a whole new light.
The NGC contains 7,840 objects, including galaxies, star clusters and emission nebulae. Dreyer published two supplements to the NGC in 1895 and 1908, known as the Index Catalogues (abbreviated IC), describing a further 5,386 astronomical objects. Thousands of these objects are best known by their NGC or IC numbers, which remain in widespread use.
The nebula may have formed through hierarchical collapse. [3] There is some equivocation in the use of the identifiers NGC 2174 and NGC 2175. These may apply to the entire nebula, to its brightest knot, or to the star cluster it includes. Burnham's Celestial Handbook lists the entire nebula as 2174/2175 and does not mention the star cluster. [4]