List of long-period comets in the context of 153P/Ikeya–Zhang

List of long-period comets in the context of 153P/Ikeya–Zhang

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👉 List of long-period comets in the context of 153P/Ikeya–Zhang

Comet Ikeya–Zhang (Japanese, Chinese: 池谷-張彗星, officially designated 153P/Ikeya–Zhang) is a long-period comet discovered independently by two astronomers from Japan and China in 2002. It has by far the longest orbital period of the numbered periodic comets. It was last observed in October 2002 when it was about 3.3 AU (490 million km) from the Sun.

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