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7 Iris
7 Iris is a large main-belt asteroid orbiting the Sun between Mars and Jupiter. It is the fourth brightest object in the asteroid belt. It is classified as an S-type asteroid, meaning that it has a stony composition.
==Discovery and name==
Iris was discovered on August 13, 1847, by J. R. Hind from London, UK. It was Hind's first asteroid discovery and the seventh asteroid to be discovered overall.
Iris was named after the rainbow goddess Iris in Greek mythology, who was a messenger to the gods, especially Hera. Her quality of attendant of Hera was particularly appropriate to the circumstances of discovery, as she was spotted following 3 Juno by less than an hour of right ascension (Juno is the Roman equivalent of Hera).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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