NGC 6752 [SEP] constellation
NGC 6752
NGC 6752 (also known as Caldwell 93) is a globular cluster in the constellation Pavo. It is the third-brightest in the sky, after Omega Centauri and 47 Tucanae, and is best seen from June to October in the Northern Hemisphere.
NGC 6752 was first identified by one James Dunlop of Parramatta on 30 June 1826, who described it as an irregular bright nebula which could be resolved into a cluster of many stars, highly compressed at the centre. This corresponds with a core region densely
forms
- 2.02 billion years (11.78 Gya): Messier 62 forms – contains high number of variable stars (89) many of which are RR Lyrae stars.
- 2.2 billion years (11.6 Gya): Globular Cluster NGC 6752, third-brightest, forms in Milky Way
- 2.4 billion years (11.4 Gya): Quasar PKS 2000-330 forms.
- 2.41 billion years (11.39 Gya): Messier 10 globular cluster forms. Messier 3 forms: prototype for the Oosterhoff type I cluster,