Binary planets that are not tidally locked

The story takes place in Alpha Centauri, with this binary orbiting just over 1 AU from Rigil Kentaurus. The star system will tightly packed, but following the 10 Mutual Hill Radii separation setup. The primary planet in this pair will be 1.2 Earth masses and second planet will be 0.85 Earth masses. I understand that it is more common for binary pairs like this to form a tidal locking situation (such as Earth-Moon), but is it possible for these to orbit at around 800,000km and have their own spins/days.

Edit: both planets still orbit eachother within an acceptable range of their hill sphere with Rigil Kentaurus.

Bonus question, would it then be possible for one (or both) planet to have a natural satellite orbit it around half to a third of Moon's mass?

posted almost 5 years ago

user72655‭

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