| 词条 | NGC 248 |
| 释义 |
| name = NGC 248 | image = Festive nebulae NGC 248.jpg | caption = NGC 248 taken as part of a survey called the Small Magellanic cloud Investigation of Dust and Gas Evolution (SMIDGE).[1] | type = emission | epoch = J2000 | ra = {{RA|00|45|24.1}}[2] | dec = {{DEC|-73|22|44.4}} | dist_ly =200,000 | appmag_v = | size_v = | constellation = Tucana | radius_ly = | absmag_v = | notes = | names = }} NGC 248 is an emission nebula in the Constellation Tucana. It was discovered in 1834 by the astronomer John Frederick William Herschel. NGC 248 is about 60 light-years long and 20 light-years wide 1. ^{{cite web|title=Festive nebulae light up Milky Way Galaxy satellite|url=https://www.spacetelescope.org/news/heic1623/|website=www.spacetelescope.org|accessdate=21 December 2016}} .2. ^{{cite web|last1=Frommert|first1=Hartmut|title=NGC 248|url=http://spider.seds.org/ngc/ngc.cgi?248|website=spider.seds.org|accessdate=21 December 2016}} See also
References 5 : Tucana (constellation)|NGC objects|Emission nebulae|Astronomical objects discovered in 1834|Star-forming regions |
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