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出典:Wikipedia
出典:『Wikipedia』 (2011/01/29 08:02 UTC 版)
UDF 423 is the Hubble Ultra Deep Field (UDF) identifier for a spiral galaxy. UDF 423 is one of the brightest galaxies in the HUDF with an apparent magnitude of 20, and also has one of the largest apparent sizes in the HUDF.
UDF 423