| 词条 | NGC 6284 |
| 释义 |
| name = NGC 6284 | image = | caption = NGC 6284 as seen through the Hubble Space Telescope | credit = NASA/ESA | epoch = J2000 | class = IX | constellation = Ophiuchus | ra = {{RA|17|04|28.747}}[1] | dec = {{DEC|-24|45|51.22}}[1] | dist_ly = 49900 ly[3] | dist_pc = 15300 pc[3] | appmag_v = 7.43[1] | size_v = 6.2' × 6.2'[6] | mass_msol = | mass_kg = | v_hb = | metal_fe = -1.26[2] | metal_z = | age = | notes = | names = GCl 53, 2MASX J17042874-2445512[1] }}NGC 6284 is a globular cluster located in the constellation Ophiuchus. It is designated as IX in the galaxy morphological classification scheme and was discovered by the German-born British astronomer William Herschel on 22 May 1784. It is at a distance of 49,900 light years away from earth.[3][4][5][6][7] See also
References1. ^1 2 3 {{cite simbad|title=NGC 6284|accessdate 3 February 2017}} {{Star-cluster-stub}}2. ^{{cite web|title=Catalog of Parameters for Milky Way Globular Clusters|url=http://physwww.mcmaster.ca/~harris/mwgc.dat|author1=William E. Harris|accessdate=3 February 2017}} 3. ^{{cite web|title=Object No. 1 - NGC 6284|url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+6284&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES|website=NASA/IPAC extragalactic database|publisher=NASA/IPAC|accessdate=3 October 2015}} 4. ^1 {{cite web|title=Revised NGC Data for NGC 6284|url=http://spider.seds.org/ngc/revngcic.cgi?NGC6284|website=Seds|accessdate=3 October 2015}} 5. ^{{cite web|title=NGC 6284 (= GCL 53)|url=http://cseligman.com/text/atlas/ngc62a.htm#6284|website=cseligman|accessdate=3 October 2015}} 6. ^1 2 {{cite web|title=NGC 6284|url=http://spider.seds.org/spider/MWGC/n6284.html|website=Seds|accessdate=3 October 2015}} 7. ^{{cite web|title=The globular cluster NGC 6284|url=https://in-the-sky.org/data/object.php?id=5051|website=In-the-sky|accessdate=3 October 2015}} 3 : Globular clusters|NGC objects|Ophiuchus (constellation) |
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