Regulus and Dwarf Galaxy Leo 1

Regulus and Dwarf Galaxy Leo 1

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Caption: Leo 1 (UGC 5470), at right, is a dwarf spheroidal galaxy that is a satellite of our own Milky Way galaxy. Regulus, at left, is the brilliant 1st magnitude alpha star of the constellation of Leo. Located about 20 arc minutes north of Regulus, Leo 1 lies at a distance of about 900,000 light years away, which makes it one of the farthest satellite galaxies of the Milky Way. It has an apparent diameter of 10.7 x 8.3 arc minutes on the sky and an apparent visual magnitude of 9.8. Leo 1, also known as UGC 5470 or the Regulus Dwarf, was discovered by A.G. Wilson in 1950 on Palomar Sky Survey plates. Along with the Milky Way and its satellite galaxies, it is a member of the local group of galaxies and the Virgo supercluster. Regulus, Alpha Leonis, is located.

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Keywords: alpha leonis, astronomy, constellation, dwarf galaxy leo 1, galaxy, leo 1, leo1, regulus, star, ugc 5470

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