Palomar 4

{{Short description|Globular cluster in the constellation Ursa Major}}

{{ Infobox globular cluster |

| name = Palomar 4

|image=250px

|caption=The globular cluster Palomar 4, taken by the Hubble Space Telescope

|credit=

| epoch = J2000

| class =

| constellation = Ursa Major

| ra = {{RA|11|29|16.8}}{{cite web

| title=SIMBAD Astronomical Database

| work=Results for Palomar 4

| url=http://simbad.u-strasbg.fr/Simbad

| accessdate=2006-11-17}}

| dec = {{DEC|+28|58|25}}

| dist_ly = 326 kly

| dist_pc = 100 kpc

| appmag_v =

| size_v =

| mass_kg =

| mass_msol =

| radius_ly =

| v_hb =

| age =

| notes =

| names = UGCA 237, GCl 17

}}

Palomar 4 is a globular cluster of the Milky Way galaxy belonging to the Palomar Globular Clusters group. It was discovered in 1949 by Edwin Hubble and again in 1955 by A. G. Wilson. It is calculated to be {{convert|100000|pc|ly|abbr=off|lk=on}} from the Sun.{{cite journal |last1=Zonoozi |first1=Akram Hasani |last2=Haghi |first2=Hosein |last3=Kroupa |first3=Pavel |last4=Küpper |first4=Andreas H.W. |last5=Baumgardt |first5=Holger |title=Direct N-body simulations of globular clusters – III. Palomar 4 on an eccentric orbit |journal=Monthly Notices of the Royal Astronomical Society |date=19 January 2017 |pages=stx130 |doi=10.1093/mnras/stx130 |doi-access=free |url=https://academic.oup.com/mnras/article/467/1/758/2929271|arxiv=1701.06168 }}

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.