![]() ![]() This also includes the reference body around which a body is orbiting. KSP's planets require an initial Orbit node, which contains all the orbital parameters at the epoch of the game. If you set up a simulation of objects that follow the laws of physics, you get the results that are predicted by those laws. They just set up the parts to follow the laws of physics and have certain predefined interactions with each other, and it works out that the rocket always ends up rotating around its center of mass. When you build a rocket out of parts, the devs don't have to create a special "center of mass" object for the rocket to rotate around. "Barycentre" is just a fancy word for the center of mass of the system.įor another example, we can look to the fact that objects in space always rotate around their center of mass. ![]() The combined effect of that is that they rotate around their combined center of mass (just like any unconstrained system). Rask is exerting gravity on Rusk, and rusk is exerting gravity on Rask. Orbits around a barycentre are an emergent property of n-body dynamics. I know that binaries are stable and all that, but are they in orbit around a body being a barycentre or have they created a barycentre of their own principia? ![]() I'm intrigued.How did you set it up? That's my question. The mass ratio of Rald to Duna is 3:1, and they are quite close (I should have zoomed just a little more so that Duna showed as a planet, and not a red Icon It doesn't display the orbit of Rald around the barycenter, but Rald does move around the barycenter. My Rald-Duna binary works just fine in Principia, with nothing needing to be adjusted: Yes you might do cool stuff like two moons who swap orbits like two of Saturn's moons do. Planets and moons will be on rails, anything else is asking for loads of bugs. Its easier to just go for patched conics to set this up, and let the Kraken guard the barycentre. AFAIK, even Principia can't set up Binaries from the outset. Please, think about the practicalities of setting up such a system on the epoch, rather than thinking about its stability. Maybe the barycentre can have some sort of HazardousBody effect that causes Ships to explode before they can come close enough for extreme orbital maneuvers. Meanwhile, for a body-on-rails thing, one can put them around a barycentre at the start. In an n-body simulation, how do you set up the initial orbital parameters of Rask and Rusk such that they start orbiting together from the start? There isn't any central point around which they can be parented, and neither can they be set up to collapse to a binary after loading around whatever star they're around. ![]()
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