Rather than go to the trouble of joining an astronomy forum, for just one question, I thought I’d roll the dice here, knowing that we have lots of very clever peeps who are forum members. Hopefully someone will have enough expertise to put me right.
The question is, roughly how much further out from the sun would Earth need to orbit, in order to have a thirteen month year? And by roughly, I’m thinking how much closer to Mars orbit.
I’m assuming that this orbit would mean a slightly colder climate, but nothing catastrophic?