Editing Messier 2 (section)

{{short description|Globular cluster in the constellation Aquarius}}
{{Infobox globular cluster | <!-- put name or coordinates into the following URL -->
| name = Messier 2
| image = [[Image:Messier2 - HST - Potw1913a.jpg|250px]]
| caption = Messier 2 by [[Hubble Space Telescope]]; 2.5{{prime}} view
| credit = 
| epoch = [[Epoch (astronomy)#Julian years and J2000|J2000]]
| class = II<ref name=hcob849_11/>
| constellation = [[Aquarius (constellation)|Aquarius]]
| ra = {{RA|21|33|27.02}}<ref name=aj140_6_1830/>
| dec = {{DEC|–00|49|23.7}}<ref name=aj140_6_1830/>
| dist_ly = {{Convert|55000|ly|kpc|abbr=on|lk=on}}<ref name=helmi2018/>
| appmag_v = 6.5<ref>{{cite web |url=http://www.messier.seds.org/m/m002.html |title=Messier 2 |access-date=21 July 2024 |website=SEDS Messier Catalog}}</ref>
| size_v = 16.0{{prime}}
| mass_msol = {{Val|1.04|e=5}}<ref name=apj742_1_51/>
| radius_ly = 87.3&nbsp;ly<ref>distance × sin( diameter_angle / 2 ) = 87.3 ly. radius</ref>
| metal_fe = –1.65<ref name=apj742_1_51/>
| v_hb = 
| age = 12.5&nbsp;[[Gigayear|Gyr]]<ref name=mf2009/>
| notes = 
| names = [[New General Catalogue|NGC]] 7089<ref name="simbad" />
}}
'''Messier 2''' or '''M2''' (also designated '''NGC 7089''') is a [[globular cluster]] in the [[constellation]] [[Aquarius (constellation)|Aquarius]], five degrees north of the [[star]] [[Beta Aquarii]]. It was discovered by [[Jean-Dominique Maraldi]] in 1746, and is one of the largest known globular clusters.