Small Magellanic Cloud

alt label
S m c
dcterms modified equal to or less than 2020-11-04T14:58:30.360Zequal to or more than 2020-11-04T14:58:30.360Z
broader original
1468 original original
1468 original
definition An irregular galaxy, the smaller of the two Magellanic Clouds that are satellites of our own Galaxy, lying in the southern constellation Tucana about 20 degrees from the south celestial pole. The SMC covers an area roughly 3 by 5 degrees in dimension and has an overall visual magnitude about +2.7. The SMC is about 10,000 light-years in diameter and some 210,000 light-years (61 kpc) away. It has a visible mass of about 1/50-th that of our Galaxy and 1/10-th of that of the Large Magellanic Cloud (LMC). Its heavy element content is about a factor 5 smaller than that of the Galaxy. The SMC is the third-nearest external galaxy after the Sagittarius Dwarf Spheroidal Galaxy and the LMC.
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contributor AAS_Frey.Katie_Admin original