04:43 <queqiao-> ⟨Z​eusbeer⟩ For extra planets you need to manually add the starting speed and position vector (from jplhorizons iirc) , and if they exists the spherical harmonics coefficients, not sure how it would work with exoplanets though

04:44 <queqiao-> ⟨Z​eusbeer⟩ I guess you could add an extra star a few light-years away and put planets around that to see what magic N-body will do 🤔

04:45 <queqiao-> ⟨Z​eusbeer⟩ Rip your pc in integrating that in timewarp

05:34 <raptop> Hey, I guess egg could use that to check on rounding errors

05:38 <queqiao-> ⟨S​oviet Onion⟩ interstellar with n body might not be a good idea. you would have to eyeball it if on an interstellar travel, because pc gon otherwise

05:38 <queqiao-> ⟨S​oviet Onion⟩ interstellar with n body might not be a good idea. you would have to eyeball intercept if on an interstellar travel, because pc gon otherwise (edited)

05:39 <queqiao-> ⟨S​oviet Onion⟩ yeah, this

05:41 <queqiao-> ⟨Z​eusbeer⟩ Wait until you switch to surface reference frame on the other star or any fast rotating body 😂

05:43 <queqiao-> ⟨Z​eusbeer⟩ For extra planets you need to manually add the starting speed and position vector (from jplhorizons iirc) , and if they exist, the spherical harmonics coefficients, not sure how it would work with exoplanets though (edited)

05:44 <raptop> For interstellar travel in sane timescales, you need to be going hugely hyperbolic anyway

05:45 <raptop> (Also, mind the 10s-100s of km/s relative velocities of the stars)

05:45 <queqiao-> ⟨S​oviet Onion⟩ i might as well smelt iron, with the laptop's heat

06:52 <_whitenotifier> [Principia] pleroy closed pull request #3127: Fix an error found by Clang - https://git.io/Jz416

06:52 <_whitenotifier> [Principia] pleroy pushed 2 commits to master [+0/-0/±2] https://git.io/JzRCG

06:53 <_whitenotifier> [Principia] pleroy 2e1a073 - Aggregate initialization required.

06:53 <_whitenotifier> [Principia] pleroy c67f71b - Merge pull request #3127 from pleroy/Clang Fix an error found by Clang

06:53 <_whitenotifier> [Principia] Pending. queued - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2018

06:53 <_whitenotifier> [Principia] Pending. queued - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2019

06:53 <_whitenotifier> [Principia] Pending. queued - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2020

06:53 <_whitenotifier> [Principia] Pending. in progress - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2018

06:53 <_whitenotifier> [Principia] Pending. in progress - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2019

06:53 <_whitenotifier> [Principia] Pending. in progress - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2020

08:10 <_whitenotifier> [Principia] Success. #2019 succeeded - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2019

08:10 <_whitenotifier> [Principia] Success. #2018 succeeded - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2018

08:51 <_whitenotifier> [Principia] Failure. #2020 failed - https://dev.azure.com/mockingbirdnest/445d7b9d-0318-42e3-857f-b69d40b1ed1b/_build/results?buildId=2020

15:35 <queqiao-> ⟨M​rCow⟩ Where do i find the starting speed, pos vector and harmonics coefficents for real exoplanets tho?

15:38 <umbralraptop> I don't think very many real exoplanets have harmonics well mapped out. YOu'd want to convert speed&position from orbital elements given at the NASA Exoplanet Archive or the like

15:40 <queqiao-> ⟨S​oviet Onion⟩ then again, we must see what those harmonics are with respect to, right? because in KSP, I saw somewhere that you need to have the body orbiting something

15:52 <umbralraptop> (Also, like I'd assume harmonics as in gravity. Which, uh, I bet we have evidence of some exoplanet somewhere deforming from spherical but wouldn't want to make predictions

15:52 <umbralraptop> )

16:04 <queqiao-> ⟨(​ᴇxᴘᴇʀɪᴍᴇɴᴛᴀʟshells)⟩ insert xkcd 859 here

16:08 <umbralraptop> Which is why I matched it in the next line!

20:40 <queqiao-> ⟨s​ichelgaita⟩ I don't believe that the orbital elements are known with any accuracy for any exoplanet. I am aware of ensemble studies that give probability distributions of the various parameters but nothing that would have much predictive value.

22:26 <queqiao-> ⟨l​pg⟩ peculiar glitch: the more I zoom in, the less history is getting drawn

22:26 <queqiao-> ⟨l​pg⟩ https://cdn.discordapp.com/attachments/480397772248580098/890363476718002286/Screen_Shot_2021-09-22_at_18.25.29.png

22:26 <queqiao-> ⟨l​pg⟩ https://cdn.discordapp.com/attachments/480397772248580098/890363523975225354/Screen_Shot_2021-09-22_at_18.25.53.png

22:27 <queqiao-> ⟨l​pg⟩ (this is a not-quite polar orbit around the moon, seen in the tracking station)

22:30 <queqiao-> ⟨A​l2Me6⟩ I could be very wrong, but as I understand it, as you zoom in Principia draws more finely-spaced segments, meaning less trajectory (time-wise) is taken to hit the segment cap.

22:31 <queqiao-> ⟨l​pg⟩ but there's no segment control for history, only a time control

22:31 <queqiao-> ⟨e​gg⟩ yeah, that’s expected

22:31 <queqiao-> ⟨e​gg⟩ this is the explanation

22:32 <queqiao-> ⟨e​gg⟩ there’s no control, but there’s still a limit

22:32 <queqiao-> ⟨l​pg⟩ hardwired or configurable?

22:32 <queqiao-> ⟨e​gg⟩ configurable, you just need to rebuild Principia 🙃 https://github.com/mockingbirdnest/Principia/blob/12d2e88992eafb7836789144b60873e5e80aa202/ksp_plugin/planetarium.cpp#L29

22:32 <queqiao-> ⟨e​gg⟩ (so hardwired :-p)