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Just to clarify, I am not looking for a magma ocean planet (I already have one in my system interior to this planet’s orbit, which has a supercritical atmosphere and a global lava ocean thanks to the extreme heat).

I am looking more for something like Mustafar; a planet with lots of volcanoes and lava lakes, with a relatively thin (<20 atm pressure) but present atmosphere (>0.1 atm pressure).

Io is so volcanic because of the tidal-flexing it experiences due to its close, eccentric orbit with Jupiter. So volcanism like this is easy to explain on moons of large gas giants. However, I’m looking for this kind of volcanism on a terrestrial planet.

This planet is going to be set 0.4 AU from a G6V star (5600 Kelvin, 0.8x as bright as the sun). It will be in a 3:2 spin-orbit resonance.

What parameters (mass, radiogenic heat, density etc.) should I consider if I want to create a world like this and have it stay very volcanic for billions of years?

Just to clarify, I am not looking for a magma ocean planet (I already have one in my system interior to this planet’s orbit, at 0.0197 AU from the star, which has a supercritical atmosphere and a global lava ocean thanks to the extreme heat).

I am looking more for something like Mustafar; a planet with lots of volcanoes and lava lakes, with a relatively thin (<20 atm pressure) but present atmosphere (>0.1 atm pressure).

Io is so volcanic because of the tidal-flexing it experiences due to its close, eccentric orbit with Jupiter. So volcanism like this is easy to explain on moons of large gas giants. However, I’m looking for this kind of volcanism on a terrestrial planet.

This planet is going to be set 0.4 AU from a G6V star (5600 Kelvin, 0.8x as bright as the sun). It will be in a 3:2 spin-orbit resonance.

What parameters (mass, radiogenic heat, density etc.) should I consider if I want to create a world like this and have it stay very volcanic for billions of years?

Just to clarify, I am not looking for a magma ocean planet (I already have one in my system interior to this planet’s orbit, which has a supercritical atmosphere and a global lava ocean thanks to the extreme heat).

I am looking more for something like Mustafar; a planet with lots of volcanoes and lava lakes, with a relatively thin but present atmosphere.

This planet is going to be set 0.4 AU from a G6V star (5600 Kelvin, 0.8x as bright as the sun). It will be in a 3:2 spin-orbit resonance.

What parameters (mass, radiogenic heat, density etc.) should I consider if I want to create a world like this and have it stay very volcanic for billions of years?

Just to clarify, I am not looking for a magma ocean planet (I already have one in my system interior to this planet’s orbit, which has a supercritical atmosphere and a global lava ocean thanks to the extreme heat).

I am looking more for something like Mustafar; a planet with lots of volcanoes and lava lakes, with a relatively thin (<20 atm pressure) but present atmosphere (>0.1 atm pressure).

Io is so volcanic because of the tidal-flexing it experiences due to its close, eccentric orbit with Jupiter. So volcanism like this is easy to explain on moons of large gas giants. However, I’m looking for this kind of volcanism on a terrestrial planet.

This planet is going to be set 0.4 AU from a G6V star (5600 Kelvin, 0.8x as bright as the sun). It will be in a 3:2 spin-orbit resonance.

What parameters (mass, radiogenic heat, density etc.) should I consider if I want to create a world like this and have it stay very volcanic for billions of years?