egg changed the topic of #principia to: Logs: https://esper.irclog.whitequark.org/principia | <scott_manley> anyone that doubts the wisdom of retrograde bop needs to get the hell out | https://xkcd.com/323/ | <egg> calculating the influence of lamont on Pluto is a bit silly…
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<queqiao-> ⟨Neamesis⟩ damnn did not know that principia used a high order symplectic integrator
<queqiao-> ⟨Neamesis⟩ that's awesome
<queqiao-> ⟨Neamesis⟩ didn't know you could replace the physics engine integrator with your own, that's pretty cool
<queqiao-> ⟨Neamesis⟩ is the default one RK4?
<queqiao-> ⟨Neamesis⟩ so symplectic integrators and numerically solving hamiltonian equations right? it's basically numerical hamiltonian mechanics?
<queqiao-> ⟨Neamesis⟩ * are
<queqiao-> ⟨sichelgaita⟩ Just like Heinz, we have 57 varieties: https://github.com/mockingbirdnest/Principia/blob/471d1e6cee13f0808eb88d8bd9765c411ce55d97/integrators/methods.hpp#L168 and RK4 is not one of them. We actually use different integrators for different purposes, and also for stock vs. RSS.
<queqiao-> ⟨Zeusbeer⟩ No princedormand78 😭
<queqiao-> ⟨Zeusbeer⟩ (i don't know that's just the one I use in GMAT)
<raptop> I want to say that stock physics doesn't even use RK4?
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<queqiao-> ⟨Mudkip909 | 𒀱 | Quandale Dingle⟩ 8
<raptop> 8
<queqiao-> ⟨Δv1㎧⟩ 8
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