| 词条 | NGC 7816 |
| 释义 |
| name = NGC 7816 | image = NGC 7816.jpg | image_size = 250px | caption= The spiral galaxy NGC 7816. | epoch = J2000 | type =Sbc [1] | ra = {{RA|00|03|48.8}}[1] | dec = {{DEC|07|28|43}}[1] | dist_ly = 217,249,200 ly | z = 0.017480/5240 km/s[1] | appmag_v = 13.61 [1] | size_v = 1.7 x 1.5[1] | constellation name = Pisces | names = CGCG 408-18, IRAS 00012+0712, MCG 1-1-18, PGC 263, UGC 16[1] |size=~ 65,468.34 ly}}NGC 7816 is a spiral galaxy located about 215 million light-years away[2] in the constellation of Pisces.[3] It was discovered by astronomer William Herschel on September 26, 1785.[4] Pair with NGC 7818NGC 7816 is listed as being in pair with the galaxy NGC 7818.[4][5] NGC 7818 is also listed as being a disturbed member of the pair.[4][6] However, due to the large difference in their recessional velocities, the two galaxies are not a true pair but an optical double.[4] See also
References1. ^1 2 3 4 5 6 {{cite web | title=NASA/IPAC Extragalactic Database | work=Results for NGC 7816 | url=http://nedwww.ipac.caltech.edu/ | accessdate=2017-08-10}} 2. ^{{Cite web|url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+7816&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|title=Your NED Search Results|website=ned.ipac.caltech.edu|access-date=2017-08-11}} 3. ^{{Cite web|url=https://dso-browser.com/deep-sky/9034/ngc-7816/galaxy|title=Galaxy NGC 7816 – Galaxy in Pisces Constellation · Deep Sky Objects Browser|last=Rojas|first=Sebastián García|website=DSO Browser|language=en|access-date=2017-08-11}} 4. ^1 2 3 {{Cite web|url=http://cseligman.com/text/atlas/ngc78.htm#7818|title=New General Catalog Objects: NGC 7800 – 7840|website=cseligman.com|language=en-US|access-date=2017-08-11}} 5. ^{{Cite web|url=http://ned.ipac.caltech.edu/cgi-bin/NEDatt?objname=NGC+7816|title=Detailed Object Classifications|website=ned.ipac.caltech.edu|access-date=2017-08-11}} 6. ^{{Cite web|url=http://ned.ipac.caltech.edu/cgi-bin/NEDatt?objname=NGC+7818|title=Detailed Object Classifications|website=ned.ipac.caltech.edu|access-date=2017-08-11}} External links{{WikiSky}}{{Ngc80}} 6 : Spiral galaxies|Pisces (constellation)|NGC objects|Principal Galaxies Catalogue objects|UGC objects|Astronomical objects discovered in 1785 |
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