Messier 9
943630
224080419
2008-07-07T05:50:57Z
KGyST
4111901
/* External links */ {{WikiSky}}
{{ Globular cluster |
| name = Messier 9
| image = [[Image:Messier object 009.jpg|250px]]
|caption = Messier 9, from ''[[2MASS]]''
| epoch = [[J2000]]
| class = VIII
| constellation = [[Ophiuchus]]
| ra = {{RA|17|19|11.78}}<ref name="simbad">{{cite web
| title=SIMBAD Astronomical Database
| work=Results for NGC 6333
| url=http://simbad.u-strasbg.fr/Simbad
| accessdate=2006-11-15}}</ref>
| dec = {{DEC|-18|30|58.5}}<ref name="simbad" />
| dist_ly = 25.8 [[light-year|kly]]
| dist_pc = 7.9 [[parsec|kpc]]
| appmag_v = +8.42<ref name="simbad" />
| size_v = 12′.0
| mass_kg =
| mass_msol =
| radius_ly = 45 ly
| v_hb =
| age =
| notes =
| names = [[New General Catalogue|NGC]] 6333<ref name="simbad" />
}}
'''Messier 9''' (also known as ''M9'' or ''NGC 6333'') is a [[globular cluster]] in the [[constellation]] [[Ophiuchus]]. It was discovered by [[Charles Messier]] in [[1764]].
M9 is one of the nearer globular clusters to the center of the [[Milky Way Galaxy]] with a distance of around 5,500 [[light-year]]s. Its distance from [[Earth]] is 25,800 light-years. The total [[luminosity]] of this cluster is around 120,000 times that of the [[Sun]], the [[absolute magnitude]] being -8.04.
The brightest individual [[star]]s in M9 are of [[apparent magnitude]] 13.5, making them visible in moderately sized [[telescope]]s. There have been 13 [[variable star]]s found in M9.
Nearby, at about 80' to the northeast of M9 is the dimmer globular cluster [[NGC 6356]], while at about 80' to the southeast is the globular [[NGC 6342]].
==External links==
* [http://www.seds.org/messier/m/m009.html Messier 9, SEDS Messier pages]
* [http://venus.mporzio.astro.it/~marco/gc/cluster_4.php?ggc=M+9 M9, Galactic Globular Clusters Database page]
* {{WikiSky}}
==References==
<div class="references-small"><references/></div>
[[Category:Globular clusters|Messier 009]]
[[Category:Ophiuchus constellation|Messier 009]]
[[Category:Messier objects|009]]
[[Category:NGC objects|Messier 009]]
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