The van den Bergh Catalogue


vdB 20

vdB 20, also known as the Pleiades (Messier 45) or the Seven Sisters, are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. The cluster is dominated by hot blue stars that have formed within the last 100 million years. A faint reflection nebulosity around the brightest stars is likely an unrelated foreground dust cloud in the interstellar medium, through which the stars are currently passing. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

(Source: Wikipedia)


vdB 34

vdB 34, also known as the Flaming Star Nebula, is an emission/reflection nebula in the constellation Auriga, surrounding the bluish star AE Aurigae. The nebula measures approximately 37.0' x 19.0', and lies about 1,500 light years away from Earth. It is believed that the proper motion of the central star can be traced back to the Orion's Belt area. The nebula is about 5 light years across.

(Source: Wikipedia)


vdB 59 / vdB 60

vdB 59 and vdB 60 are reflection nebula in the constellation Orion. VdB 59, also known as Messier 78, was discovered by Pierre Méchain in 1780 and included by Charles Messier in his catalog that same year. M78 is the brightest diffuse reflection nebula of a group of nebulae that includes NGC 2064, NGC 2067 and NGC 2071 (vdB60). This group belongs to the Orion Molecular Cloud Complex and is about 1,600 light years distant from Earth. Two stars are responsible for making the cloud of dust in M78 visible by reflecting their light. About 45 variable stars of the T Tauri type, young stars still in the process of formation as well as some 17 Herbig–Haro objects are known in M78.

(Source: Wikipedia)


vdB 139

vdB 139, also known as NGC 7023 or the Iris Nebula, is a bright reflection nebula in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158. It shines at magnitude +6.8. NGC 7023 lies 1,300 light years away and is six light years across. It was discovered in 1794 by Sir William Herschel.

(Source: Wikipedia)