What is the approximate minimum core temperature required for thermonuclear fusion to initiate in a celestial body?

Answer

10 million Kelvin (K)

For a body to qualify as a star and initiate thermonuclear fusion, its core must achieve a minimum critical temperature consistently cited around 10 million Kelvin, equivalent to about 15 million degrees Celsius.

What is the approximate minimum core temperature required for thermonuclear fusion to initiate in a celestial body?
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