Search results
Results from the WOW.Com Content Network
NGC 1788 is a reflection nebula in the constellation of Orion. It is rather sharply defined on its southwest perimeter where it is flanked by the dark nebula known as LDN 1616 (or Lynds 1616). LDN 1616 is apparently part of NGC 1788. The brightest involved star is 10th magnitude and lies in the northwest sector.
Messier 78 or M78, also known as NGC 2068, is a reflection nebula in the constellation Orion. It was discovered by Pierre Méchain in 1780 and included by Charles Messier in his catalog of comet-like objects that same year. [4] M78 is the brightest diffuse reflection nebula of a group of nebulae that includes NGC 2064, NGC 2067 and NGC 2071.
NGC 2071 is a reflection nebula in the constellation Orion. It was discovered on January 1, 1784, by William Herschel. [1] It is part of a group of nebulae that also includes Messier 78, NGC 2064, and NGC 2067. The star HD 290861 is located in the center of NGC 2071. It is the illuminating star of this reflection nebula.
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 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 ...
Babylonian astronomy collated earlier observations and divinations into sets of Babylonian star catalogues, during and after the Kassite rule over Babylonia. These star catalogues, written in cuneiform script, contained lists of constellations, individual stars, and planets. The constellations were probably collected from various other sources.
NGC 2022 is a planetary nebula in the equatorial constellation of Orion, located at a distance of 8.21 kilolight-years from the Sun. [3] It was first observed by William Herschel on December 28, 1785, who described it as: considerably bright, nearly round, like a star with a large diameter, like an ill-defined planetary nebula. [7]
Theta 1 Orionis C (θ 1 Orionis C) is a member of the Trapezium open cluster that lies within the Orion Nebula. The star C is the most massive of the four bright stars at the heart of the cluster. It is an O class blue main sequence star with a B-type main sequence companion.