| 词条 | NGC 6309 |
| 释义 |
| name = NGC 6309 | image = NGC6309-HST-R814GB555.png | image_size = 250px | caption = NGC 6309 as seen through the Hubble Space Telescope | epoch = J2000 | pronounce = | constellation_name = Ophiuchus | ra = {{RA|17|14|04.3}} | dec = {{DEC|-12|54|38}} | z = | h_radial_v = | gal_v = | dist_pc = | dist_ly = | group_cluster = | type = PN | mass = | mass_light_ratio = | size = | stars = | appmag_v = 11.5 | absmag_v = | size_v = 0.32 | notes = | names = PK 9+14.1, CS=14.4 and Box nebula | references = NASA/IPAC extragalactic datatbase, http://spider.seds.org/ }}NGC 6309 also known as the Box Nebula is a quadrupolar planetary nebula located in the constellation Ophiuchus. It is designated as PN in the galaxy morphological classification scheme and was discovered by the German astronomer Wilhelm Tempel in 1876. It has a luminosity of about 1800 times of the Sun.[1][2][3][4] See also
References1. ^{{cite web|title=Object No. 1 - NGC 6309|url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+6309&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=4 October 2015}} {{Nebula-stub}}2. ^{{cite web|title=Revised NGC Data for NGC 6309|url=http://spider.seds.org/ngc/revngcic.cgi?NGC6309|website=Seds|accessdate=4 October 2015}} 3. ^{{cite web|title=NGC 6309, the Box Nebula|url=http://cseligman.com/text/atlas/ngc63.htm#6309|website=Seds|accessdate=4 October 2015}} 4. ^{{cite web|title=NGC 6309|url=http://stars.astro.illinois.edu/sow/n6309.html|website=Illinois.edu|accessdate=4 October 2015}} 4 : Ophiuchus (constellation)|NGC objects|Planetary nebulae|Nebulae |
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