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-> ⟨Overloader⟩ can i somehow set an alarm for when a orbit significantly changes?
<queqiao-> For example an alarm for when a satelite would either crash into the moon or escape it so i can go in and do a correction burn?
<queqiao-> ⟨test_account⟩ use orbit analyzer to find out when the orbit changes too much, set an alarm
<queqiao-> ⟨Overloader⟩ what about this tells me when it will crash
<queqiao-> ⟨test_account⟩ it shows lowest altitude - 17km, and says "collision risk" in orange
<queqiao-> ⟨test_account⟩ duration is 37 days, so this might happen within 37 days
<queqiao-> ⟨test_account⟩ decrease duration and see when the warning goes away
<queqiao-> ⟨Overloader⟩ I see, thanks
<queqiao-> ⟨Gratak-⟩ It will usually happen shortly before the amount of days written there. Since the calculation stops shortly after impact
<queqiao-> ⟨test_account⟩ so what happens if you enter 1037 days now?
<queqiao-> ⟨Gratak-⟩ It starts calculating but still stops at 37 days
<queqiao-> ⟨Gratak-⟩ That actually happened for him. See the calculation bar that isn't finished
<queqiao-> ⟨test_account⟩ but i don't think it will tell anywhere that it stopped at 37 days
<queqiao-> ⟨Gratak-⟩ It certainly does for the one from flight plans
<queqiao-> ⟨test_account⟩ no, it just means the screenshot was taken when the calculation was not completed
<queqiao-> ⟨Gratak-⟩ Try it. Make a 1000 day flight plan in an instable orbit. Then open the analyer. It will tell you something else than 1000 days
<queqiao-> ⟨test_account⟩ besides, collision risk or worse, "reentry" is not impact, and the calculation will continue long after the craft is already in the atmosphere
<queqiao-> ⟨Gratak-⟩ And that number it tells you will be a pretty good aproximation. Except on planets with an atmosphere
<queqiao-> ⟨test_account⟩ so the only reliable way to do it is to decrease duration until the warning go away, not hope that the calculation stops at 37 days or something like that.
<queqiao-> ⟨test_account⟩ * warnings
<queqiao-> ⟨Gratak-⟩ I never said to hope for the 37 days. I just said, that those days are already close to the solution, which is very useful to know
<queqiao-> ⟨Gratak-⟩ +37
<queqiao-> ⟨Stonesmile⟩ ⟪Overloader⟫ can i somehow set an alarm for when a […] ⮪ I usually do this by planning the next burn in advance and setting an alarm for the next node
<queqiao-> ⟨test_account⟩ That might require a very long flight plan in low orbit, which is resource consuming
<queqiao-> ⟨Stonesmile⟩ Not as bad as it used to be, with recent updates
<queqiao-> ⟨test_account⟩ the orbit analyzer is faster anyway
<queqiao-> ⟨Stonesmile⟩ Yeah, my use case was a Lissajous orbit, so that wasn't an option for that case
<_whitenotifier-1adf> [Principia] eggrobin closed pull request #3598: Add the rotating-pulsating reference frame and use it in EquipotentialTest - https://github.com/mockingbirdnest/Principia/pull/3598
<queqiao-> ⟨EMPERORINTERNET⟩ is an evenly spaced satellite constellation even possible in principia?
<queqiao-> ⟨EMPERORINTERNET⟩ think i'm going mad here
<queqiao-> ⟨Starmincer⟩ Over what timescale?
<queqiao-> ⟨EMPERORINTERNET⟩ dunno
<queqiao-> ⟨EMPERORINTERNET⟩ years?
<queqiao-> ⟨EMPERORINTERNET⟩ doesn't have to be perfect, but at least usable as commnet
<queqiao-> ⟨test_account⟩ not really possible, not worth it
<queqiao-> ⟨Starmincer⟩ You don't need a perfect constellation for comms.
<queqiao-> ⟨egg⟩ I really need to get back to #σκοπός so we can start getting some semblance of an intuition of how orbit and constellation design works…
<queqiao-> ⟨egg⟩ +into people’s minds
<queqiao-> ⟨EMPERORINTERNET⟩ so i put up 4 satellites in a good-enough orbit and hacked them to a semblance of synchronizity with hyperedit
<queqiao-> ⟨EMPERORINTERNET⟩ let's see how it goes
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<raptop> There's a case to be made for going with highly elliptical orbits (eg: Молния), though you might still have issues with apses or planes moving
<queqiao-> ⟨patrikcath⟩ ⟪EMPERORINTERNET⟫ so i put up 4 satellites in a […] ⮪ There was a mod that lets you set an exact orbit from the tracking station if the craft is very close to it and has monopropellant, but I have no idea if it works with RP-1 or RO
<queqiao-> ⟨patrikcath⟩ It would probably break horribly with Principia anyway
<paculino> The hack gravity loophole would allow it, wouldn't it?
<_whitenotifier-1adf> [Principia] pleroy opened pull request #3600: Remove compatibility namespaces from astronomy - https://github.com/mockingbirdnest/Principia/pull/3600
<_whitenotifier-1adf> [Principia] pleroy closed pull request #3600: Remove compatibility namespaces from astronomy - https://github.com/mockingbirdnest/Principia/pull/3600
<_whitenotifier-1adf> [Principia] pleroy opened pull request #3601: Remove compatibility namespaces from benchmarks and geometry - https://github.com/mockingbirdnest/Principia/pull/3601