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Post Info TOPIC: NGC 474


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Arp 227
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ATel 10570: Optical transient inside bright galaxy NGC 474.



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L

Posts: 130170
Date:
NGC 474
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NGC 474 (also Arp 227, MCG 0-4-85, UGC 864, and PGC 4801) is a magnitude +11.3 lenticular galaxy located about 107 ±8 million light-years away in the constellation Pisces. 

NGC 474, together with the nearly face-on spiral galaxy NGC 470, forms a loose pair of galaxies. It is likely that gravitational interactions have caused the unusually complex structure of shells and tidal tails in NGC 474.
Both galaxies were catalogued as Arp 227 in the Atlas of Peculiar Galaxies produced by Halton Arp in 1966.

The galaxy was discovered by German-British astronomer William Herschel using a 47.5 cm (18.7 inch) f/13 speculum reflector at Datchet, Berkshire, on the 13th December 1784 

Right ascension 01h 20m 06.7s, Declination +03° 24' 58"



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