Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Binary planets that are not tidally locked

+0
−0

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?

History
Why does this post require moderator attention?
You might want to add some details to your flag.
Why should this post be closed?

This post was sourced from https://worldbuilding.stackexchange.com/q/169222. It is licensed under CC BY-SA 4.0.

0 comment threads

0 answers

Sign up to answer this question »