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HIP 13044b
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HIP 13044b

extrasolar planet
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Written by
Erik Gregersen
Erik Gregersen is a senior editor at Encyclopaedia Britannica, specializing in the physical sciences and technology. Before joining Britannica in 2007, he worked at the University of Chicago Press on the...
Erik Gregersen
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HIP 13044b, first extrasolar planet that was found orbiting a star that originated outside the Milky Way Galaxy. HIP 13044b has a mass at least 1.25 times that of Jupiter and orbits its host star, HIP 13044, every 16.2 days at a distance of 17.4 million km (10.8 million miles). It was discovered in 2010 by astronomers using a 2.2-metre (7.2-foot) telescope at the La Silla Observatory in Chile. HIP 13044 is at a distance of about 2,000 light-years from Earth in the constellation Fornax and is a star in the Helmi stream, the remnant of a dwarf galaxy that ...(100 of 297 words)

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