Hatch's son Paul confirmed the actor's death, reported The Guardian.
"He died peacefully with his family and friends at his side after a battle with pancreatic cancer," Paul said.
While Hatch's manager Michael Kaliski said the actor would be remembered for his youthful wonder, passion for creativity and kind heart.
The longtime TV actor was known for his role as Captain Apollo on the original 1978 series "Battlestar Galactica" which earned him a Golden Globe nomination.
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The actor also wrote novels set in the BSG universe and for years lobbied to revive the franchise with a series that was more in the vein of the '78 original.
Actors and creators from the original and rebooted "Battlestar Galactica" series paid tribute to the actor on Twitter.
Ronald D Moore, who developed and executive produced the reboot, said Hatch's passing was "a heavy blow to the entire BSG family".
Katee Sackhoff, who played Kara "Starbuck" Thrace, posted a photo of herself, writing, "Goodbye my friend. See you on the other side. Fuck this hurts. #SoSayWeAll.
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