Palomar 4

Palomar 4
The globular cluster Palomar 4, taken by Hubble Credit: NASA/ESA
Observation data (J2000 epoch)
Constellation	Ursa Major
Right ascension	11h 29m 16.8s
Declination	+28° 58′ 25″
Distance	356 kly (109 kpc)
Physical characteristics
Other designations	UGCA 237, GCl 17

Palomar 4 is a globular cluster of the Milky Way galaxy. It was discovered in 1949 by Edwin Hubble and again in 1955 by A. G. Wilson. Based on measurements of the stars from the Gaia spacecraft, it is at least 65,000 light-years (20,000 parsecs) from the Sun.

This star cluster is further away than the SagDEG satellite galaxy.

Initially it was thought to be a dwarf galaxy, and it was given the name Ursa Major Dwarf. However, it was later discovered to be a globular cluster.

See also

• Ursa Major Dwarf

External links

• Media related to Palomar 4 at Wikimedia Commons
• Palomar 4 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images