The Enoch manuscript is one of the Dead Sea Scrolls. I can't find information on which one specifically. The remains of the diary of Ilan Ramon, which survived the crash of the Space Shuttle Columbia, was also on display at the Israel Museum in 2008.
Cross-file under Old Testament Pseudepigrapha Watch.
UPDATE (16 June): A reader informs me that the Enoch manuscript is 4Q209, fragments of the Aramaic Astronomical Book.
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