27. Sean Raymond - Terrestrial planet formation at home and abroad

What people said

Strong rec ProfRob · 2015-01 · Astronomy Stack Exchange · on “Likelihood of a stable system with a dwarf planet's orbit inside that of a gas giant”

I have an answer for the first part of your question, because I looked it up in answering [LINK] on Physics SE. If you want to see what the current state of the art on solar system simulations is you could do worse than watch Sean Raymond's presentation [this video] at "Protostars and Planets VI" from 2013. You can find the actual write up here [LINK] . Or from the same conference there is Melvyn Davies' [LINK] review of the long-term dynamics of planetary systems. The talk can be seen here. [LINK] This review does contain the sort of information you are looking for. It discusses the past and future evolution of our solar system, as well as planetary systems in general. It presents and reviews si

Recommends userLTK · 2019-08 · Astronomy Stack Exchange · on “Are there any simulations of the Grand tack?”

This video is close enough to your question to be worth a look. It shows multiple simulations from various starting points and in my opinion, it's a high quality lecture. [this video] These kind of simulations, to my understanding, require supercomputers. The calculations required are enormous.

Recommends userLTK · 2020-02 · Astronomy Stack Exchange · on “What would happen if the earth's orbit were slightly perturbed?”

You're touching on a lot of related topics which isn't recommended for Stack Exchange. It's better to keep it to one question and specific. That said, I'll give this an answer as best I can, as I've been interested in this subject for a while and have read up on it a bit. The powers that be might close this question for being too broad and/or lacking specifics on the specific details of the rogue planet that affects Earth's orbit. The subject of the orbital systems around different stars is of interest to astronomers and it has been modeled, many times in fact and observed, though it's very difficult to get a good look at other solar systems. Most of what has been observed is probably incomp

Cites Irigi · 2015-03 · Astronomy Stack Exchange · on “Orbital resonances and position of planets”

I am interested in quick generation of planetary systems for programs similar to Space Engine [LINK] or Pioneer Space Simulator [LINK] . As far as I understand, formation of planets is a complex process and the planet positions are to a great extend given by the orbital resonances, particularly with the gas giant planets. It is very clearly visible in this talk of Sean Raymond [this video] . My question is: How exactly do the orbital resonances affect the stability of the planet trajectories? Which resonances are stable, and which are unstable in the long term evolution of the planetary system?

Cites userLTK · 2016-09 · Astronomy Stack Exchange · on “Average number and type of planets orbiting given star types”

I wrestled with this one a bit, but because there's no real scientific answer to it, your best bet might to look at the 6 or 8 best known other solar-systems and build off that. There's no right answer, so a base off evidence approach is probably the way to go. Or, if you want to base it off nonsense, but sound impressive, you could use the Titius-Bode law [LINK] . But I think that's a bad idea, unless large gas giant planetary migration is kept to a minimum, because a migrating Jupiter would make mincemeat of that "law". The easiest exoplanets to find are planets with short orbits and the easiest stars for us to find planets around are smaller stars. With those limitations to your view, giv