Good afternoon! I'm working on a fantasy series set on a very small planet, roughly the size of Pluto or the Moon. I've already read some topics on the small earth-like planets, but mine's a bit unique. Here's why:

The Planet

• Roughly the size between Pluto and the Moon
• Same gravity (maybe a bit less) as Earth
• Slightly warmer temperatures than on Earth
• Slightly shorter days and years
• Geologically active (= moving plates and active volcanos)
• Able to sustain intelligent life

The moon

• The size of Io
• Geologically active like Io
• Similar surface like Io
• Basically the same as Io

I am aware that this would be a very difficult thing to become a reality. The planet would have to be unrealistically dense, maybe of platinum, but that wouldn't create the magnetic field. So maybe a different material yet undiscovered by Humans would have to take place.
I wanted to know if this "binary planet" would work, with the "Pluto" and "Io" orbiting each other and the Sun itself.

I will be very thankful for any answer!

Good afternoon! I'm working on a fantasy series set on a very small planet, roughly the size of Pluto or the Moon. I've already read some topics on the small earth-like planets, but mine's a bit unique. Here's why:

(Few parts edited)

The Planet

• Roughly the size between Pluto and Callisto (2370-4800km diameter)
• Same gravity (maybe a bit less) as Earth
• Slightly warmer temperatures than on Earth
• Slightly shorter days and years
• Geologically active (= moving plates and active volcanos)
• Able to sustain intelligent life

The moon

• The size of Io
• Geologically active like Io
• Similar surface like Io
• Basically the same as Io

I have changed few things since the last post. The planet may be upscaled, Pluto-sized planet was maybe an overkill.

I will be very thankful for any answer!

Good afternoon! I'm working on a fantasy series set on a very small planet, roughly the size of Pluto or the Moon. I've already read some topics on the small earth-like planets, but mine's a bit unique. Here's why:

The Planet

• Roughly the size between Pluto and the Moon
• Same gravity (Maybe a bit less) of Earth
• Slightly warmer temperatures than on Earth
• Slightly shorter days and years
• Geologically active (=Moving plates and active volcanos)
• Able to sustain intelligent life

The moon

• The size of Io
• Geologically active like Io
• Similar surface like Io
• Basically the same as Io

I am aware that this would be very difficult thing to become a reality, planet would have to be unrealistically dense, maybe of platinum, but that wouldn't create the magnetic field, so maybe a different material yet undiscovered by Humans would have to take place. I wanted to know if this "binary planet" would work, with the "Pluto" and "Io" orbiting each other and the Sun itself.

I will be very thankful for any answer!

Good afternoon! I'm working on a fantasy series set on a very small planet, roughly the size of Pluto or the Moon. I've already read some topics on the small earth-like planets, but mine's a bit unique. Here's why:

The Planet

• Roughly the size between Pluto and the Moon
• Same gravity (maybe a bit less) as Earth
• Slightly warmer temperatures than on Earth
• Slightly shorter days and years
• Geologically active (= moving plates and active volcanos)
• Able to sustain intelligent life

The moon

• The size of Io
• Geologically active like Io
• Similar surface like Io
• Basically the same as Io

I am aware that this would be a very difficult thing to become a reality. The planet would have to be unrealistically dense, maybe of platinum, but that wouldn't create the magnetic field. So maybe a different material yet undiscovered by Humans would have to take place. 
I wanted to know if this "binary planet" would work, with the "Pluto" and "Io" orbiting each other and the Sun itself.

I will be very thankful for any answer!