View source for Astronomy:NGC 6440

{{Short description|Globular cluster in the constellation of Sagittarius}}
{{Infobox globular cluster
| name = NGC 6440
| class = V
| image = [[File:NGC 6440 hst 12517 R814B606.png|250px]]
| caption = The globular cluster NGC 6440 imaged by the [[Astronomy:Hubble Space Telescope|Hubble Space Telescope]]
| credit =
| epoch = [[Astronomy:J2000|J2000]]
| constellation = [[Astronomy:Sagittarius (constellation)|Sagittarius]]
| ra = {{RA|17|48|52.7}}<ref name=seds/>
| dec = {{DEC|-20|21|36.9}}<ref name=seds/>
| dist_ly = 27.7 [[Light year|kly]]<br />(8.5 [[Astronomy:Parsec|kpc]])<ref name=simbad>{{cite simbad|title=NGC 6440|accessdate=8 January 2017}}</ref>
| appmag_v = 10.10<ref name=simbad/>
| size_v = 
| mass_msol = 
| radius_arcminsec = 3.15' x 3.15'<ref name=seds />
| v_hb =
| metal_fe = -0.36<ref name=altervista>{{cite web|title=A Galactic Globular Clusters Database: NGC 6440|url=http://gclusters.altervista.org/cluster_4.php?ggc=NGC+6440|access-date=8 January 2017}}</ref>
| metal_z = 
| age = 
| notes =
| names = GCl 77, 1FGL J1748.7-2020, MXB 1746-20<ref name=simbad/>
}}

'''NGC 6440''' is a [[Astronomy:Globular cluster|globular cluster]] in the [[Astronomy:Constellation|constellation]] [[Astronomy:Sagittarius (constellation)|Sagittarius]] discovered by William Herschel on 28 May 1786. It has an [[Astronomy:Apparent magnitude|apparent magnitude]] of around 10, with a diameter of about 6 arcminutes, and its [[Shapley–Sawyer Concentration Class]] is V.<ref name=seds>{{cite web|title=NGC 6440|url=http://spider.seds.org/spider/MWGC/n6440.html|access-date=19 December 2019}}</ref>

==References==
{{Reflist}}

==External links==
* [http://spider.seds.org/spider/MWGC/n6440.html NGC 6440]


[[Category:Globular clusters]]
[[Category:Sagittarius (constellation)]]
[[Category:NGC objects|6440]]



{{Sourceattribution|NGC 6440}}