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…
<queqiao-_> ⟨K​obymaru⟩ Basically just timers and checking up on it with orbit prediction. Try to find stable orbits if possible.
<queqiao-_> ⟨K​obymaru⟩ Fail miserably at it by trying to maneuver into a moon orbit with parameters from a paper with 2 out of 3 moon relays, only to find out that only the one you forgot to adjust the orbit of is alive and the other two were eaten by the evil *mascons*
<queqiao-_> ⟨K​obymaru⟩ Not speaking from experience or anything
<queqiao-_> ⟨l​pg⟩ What am I missing? "Lowest altitude" -85km, "Mean periapsis altitude" 1 ± 60km. Where's the other 26km going?
<queqiao-_> ⟨e​gg⟩ in the word *mean*. That periapsis altitude is the periapsis altitude of a theoretical orbit with the mean eccentricity and mean semimajor axis, not the actual altitude of an actual periapsis.
<queqiao-_> ⟨e​gg⟩ the ± describes the variation of the mean elements (your orbit is deforming quite quickly, as you can see in another way in the variation in eccentricity).
<queqiao-_> ⟨A​l2Me6⟩ Feature request (and l10n pain): hover descriptions for all the items on that page
<raptop> l10n?
<queqiao-_> ⟨A​l2Me6⟩ localization
<raptop> oh
<queqiao-_> ⟨l​pg⟩ ah. I had taken the ± to indicate the range of values adding up to the mean (and then I wondered how the mean could always be right in the middle of the range)
<raptop> I assume ±1σ?
<queqiao-_> ⟨e​gg⟩ nah, range of values of the mean element, with the midpoint
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ hmm
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ not only that, can remain stable for a few years
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ SE L1/2 is quite stable and you can plot so that a halo/lyapunov orbit can remain 3-6 laps, each consuming 1/2 years, which can remain 3 years of stability
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ EM L1/2 is unstable due to pertubtions of Sun being high
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ EM L1/2 is unstable due to pertubations of Sun being high (edited)
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ ------
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ btw, is Principia unable to simulate axial precession?
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ (despite not being apparent way before Principia begin to lag your game to death because it takes 26k years for 360deg)
egg|laptop|egg has quit [Remote host closed the connection]
raptop has quit [Quit: leaving]
raptop has joined #principia
egg|laptop|egg has joined #principia
egg|laptop|egg_ has quit [Ping timeout: 189 seconds]
UmbralRaptor has joined #principia
UmbralRaptop has quit [Ping timeout: 189 seconds]
armed_troop has quit [Ping timeout: 189 seconds]
mofh has quit [Ping timeout: 189 seconds]
mofh has joined #principia
armed_troop has joined #principia
_whitelogger has joined #principia
<queqiao-_> ⟨B​utcher⟩ The Sun is a cruel mistress. q.v. my Mercury orbiter that got eaten. 😦
<_whitenotifier> [Principia] Cyberdr8gon starred Principia - https://git.io/JMvBp
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ huh
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ what happened
<queqiao-_> ⟨!​Kerbinator (free to ping me)!⟩ pertubed by the Sun and then crashed into Mercury?
<queqiao-_> ⟨B​utcher⟩ Yes, started in a ~180x6000 km orbit, perturbed into an almost circular orbit, then perturbed into a highly elliptical orbit which hits mercury.
<queqiao-_> ⟨🌈​Exilate⟩ thanks newton
<_whitenotifier> [Principia] pleroy opened pull request #3218: Add a function to merge two nonoverlapping DiscreteTrajectory objects - https://git.io/JMJDR
<_whitenotifier> [Principia] Pending. Build queued… - 
<_whitenotifier> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/5279/
egg|laptop|egg_ has joined #principia
<_whitenotifier> [Principia] pleroy edited pull request #3218: Add a function to merge two nonoverlapping DiscreteTrajectory objects - https://git.io/JMJDR
<_whitenotifier> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/5279/
egg|laptop|egg_ has quit [Remote host closed the connection]
egg|laptop|egg_ has joined #principia
egg|laptop|egg_ has quit [Remote host closed the connection]
egg|laptop|egg_ has joined #principia
<_whitenotifier> [Principia] eggrobin labeled pull request #3218: Add a function to merge two nonoverlapping DiscreteTrajectory objects - https://git.io/JMJDR
<_whitenotifier> [Principia] pleroy closed pull request #3218: Add a function to merge two nonoverlapping DiscreteTrajectory objects - https://git.io/JMJDR
<_whitenotifier> [Principia] pleroy pushed 9 commits to master [+1/-1/±132] https://git.io/JMTIu
<_whitenotifier> [Principia] pleroy b60457c - Start to implement Merge.
<_whitenotifier> [Principia] pleroy 063bb2b - Merge branch 'master' into Merge
<_whitenotifier> [Principia] pleroy e18e63e - Merge branch 'master' into Merge
<_whitenotifier> [Principia] ... and 6 more commits.
Raidernick_ has joined #principia
Raidernick has quit [Ping timeout: 189 seconds]
raptop has quit [Ping timeout: 189 seconds]
raptop has joined #principia
Raidernick_ has quit [Quit: Leaving]
Raidernick has joined #principia