Capricornus Dwarf (Palomar 12)
The Capricornus Dwarf (Palomar 12) is an object originally classified as a dwarf spheroidal galaxy by Fritz Zwicky (although he catalogued it with the wrong sign in declination) and presumed
to be a member of the Local Group. Later
it was found actually to be a remote globular
cluster within our own galaxy, and catalogued as the twelfth object
in the Palomar catalogue of globular clusters. Palomar 12 lies in the constellation Capricornus, about 62,000 light-years from the
Sun and some 49,000 light-years from the galactic center at R.A. 21h 46.6m,
Dec. -21° 15'. According to one hypothesis, it may have escaped from
the Sagittarius Dwarf Elliptical Galaxy to
become part of the Milky Way's halo.
|Palomar 12. Digital Sky Survey, 20.88'
AND STAR CLUSTERS