NGC 6535 is a
globular cluster of stars located at a distance of 22,200
light years from
Earth in the
equatorial Equatorial may refer to something related to:
*Earth's equator
**the tropics, the Earth's equatorial region
**tropical climate
*the Celestial equator
** equatorial orbit
**equatorial coordinate system
** equatorial mount, of telescopes
* equatorial ...
constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
The origins of the e ...
of
Serpens, and is listed in the ''
New General Catalogue
The ''New General Catalogue of Nebulae and Clusters of Stars'' (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies, star clusters and ...
''. Its discovery is usually attributed to
astronomer John Russell Hind
John Russell Hind FRS FRSE LLD (12 May 1823 – 23 December 1895) was an English astronomer.
Life and work
John Russell Hind was born in 1823 in Nottingham, the son of lace manufacturer John Hind and Elizabeth Russell, and was educated at ...
in 1852, however Wolfgang Steinicke has uncovered evidence that
William Herschel's first discovery was actually NGC 6535, which he observed on 24 August 1780.
The cluster is suspected to harbour an
intermediate-mass black hole in its center
and, unusually for a low-mass globular cluster, has had multiple generations of stars.
Rather small and sparse for a globular cluster,
this cluster contains no known RR Lyrae variables, which is unusual for a globular cluster.
References
External links
*
{{DEFAULTSORT:NGC 6535
Serpens
Globular clusters
Astronomical objects discovered in 1852
6535