"Though HAT-P-2b is only slightly larger than Jupiter, it weighs around eight times as much.""Perhaps most unusual of all is the newly discovered world's boomerang orbit. HAT-P-2b closes to within 3.1 million miles (5 million kilometers) of its star before swinging out to around 9.6 million miles (15 million kilometers) away, all in just 5.6 days."
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