Palomar 4

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Palomar 4
Palomar 4 HST 10622 01 R775G555B475.png
The globular cluster Palomar 4, taken by Hubble
Credit: NASA/ESA
Observation data
ConstellationUrsa Major
Physical characteristics
Other designationsUGCA 237, GCl 17
See also: Globular cluster, List of globular clusters

Palomar 4 is a globular cluster orbiting the Milky Way galaxy. It was discovered in 1949 by Icons-flag-us.png American astronomer Edwin Hubble but found again in 1955 by A. G. Wilson; it is 356,000 light-years away, which is further than the Magellanic Clouds and SagDEG satellite galaxies.
Originally it was thought to be a dwarf galaxy, and it was thus given the canon name Ursa Major Dwarf. However, it was later discovered to be only a globular cluster.


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