| 词条 | NGC 226 |
| 释义 |
| name = NGC 226 | caption = SDSS image of NGC 226 | epoch = J2000 | ra = {{RA|00|42|54.0}}[1] | dec = {{DEC|+32|34|51}}[1] | constellation name = Andromeda | z = 0.016094[1] | dist_ly = 216 Mly[2] | type = S[1] | appmag_v = 14.31[1] | size_v = 0.9' × 0.9'[1] | notes = | names = UGC 00459, CGCG 500-076, 2MASX J00425403+3234516, 2MASXi J0042540+323451, IRAS 00402+3218, F00401+3218, PGC 2572.[1] | image = NGC226 - SDSS DR14.jpg | alt = NGC 226 }}NGC 226 is a spiral galaxy located approximately 216 million light-years from the Sun[2] in the constellation Andromeda. It was discovered on December 21, 1786 by William Herschel.[3] See also
References1. ^1 2 3 4 5 6 {{cite web | title=NASA/IPAC Extragalactic Database | work=Results for NGC 0226 | url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+226&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 | accessdate=2016-09-02}} 2. ^1 An object's distance from Earth can be determinded using Hubble's law: v=Ho is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=Ho 3. ^{{cite web|title=New General Catalog Objects: NGC 200 - 249|url=http://cseligman.com/text/atlas/ngc2.htm#226|publisher=Cseligman|accessdate=September 10, 2016}} External links
6 : NGC objects|Principal Galaxies Catalogue objects|Spiral galaxies|Andromeda (constellation)|Astronomical objects discovered in 1786|Discoveries by William Herschel |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。