TOI-4603

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TOI-4603, also known as HD 245134, is a single G0-type star about 731 light-years away in the constellation Taurus. A massive giant planet, TOI-4603 b, was discovered via the transit method in 2023, with an orbital period of 7.25 days. The planet has a mass of approximately 12.89 times that of Jupiter, a radius of about 1.04 times that of Jupiter, and an exceptionally high bulk density of 14.1 g/cm³, placing it at the transition between massive giant planets and low-mass brown dwarfs.

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