egg changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Cardano. We currently target 1.2.2. <scott_manley> anyone that doubts the wisdom of retrograde bop needs to get the hell out | https://xkcd.com/323/
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<maccollo>
not stable forever, but for a long time
<maccollo>
That was strange...
<maccollo>
I had a similar orbit
<maccollo>
according to the prediction it was supposed to be stable, basically forever
<maccollo>
then I launched another that passed in and out of mun's SOI
<maccollo>
so similar orbit but closer
<maccollo>
time accelerated and the first satelite got ejected instantly
<egg>
might be that bug where we sometimes lost track of vessels?
<egg>
dunno
egg is now known as egg|zzz|egg
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<maccollo>
well, it doesn't want to do it anymore
<egg|zzz|egg>
eh hopefully it will be fixed in Cartan, if you come across it then we'll look again :-p
<egg|zzz|egg>
maccollo: not sure what's up with the physics warp thing btw, I'd say don't physics warp for now, I don't think I'll have the time to look into that for Cartan
<maccollo>
must have been something like it... the other vessel wouldn't enter the mun SOI for like 20 years
<maccollo>
probably more but I couldn't predict further
<GH>
[Principia] pleroy opened pull request #1322: Expose the ascending/descending nodes in the interface (master...Node) https://git.io/vS9An
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<maccollo>
the Illuminati orbit can be made sharper in the Duna system
<egg|zzz|egg>
UmbralRaptor: show that to your students to confuse them
<egg|zzz|egg>
UmbralRaptor: the CR3BP is fun
<UmbralRaptor>
They struggle with P² = a³, though.
<UmbralRaptor>
I don't need them thinking gravity is fake. =(
<egg|zzz|egg>
UmbralRaptor: you're making too many constants 1 :-p
<maccollo>
the square around Mun is more interesting since it also has an interesting shape in the reference around the planet. This Duna square doesn't have an interesting orbit in Ike's reference frame
<UmbralRaptor>
Also one variable.
<egg|zzz|egg>
UmbralRaptor: well it's supposed to be constant in Kepler's problem
<UmbralRaptor>
Okay, that goes to zero.
<egg|zzz|egg>
otherwise weird things are happening
<egg|zzz|egg>
UmbralRaptor: please don't model mass loss of the central body
<UmbralRaptor>
P²=4π²/G(M+m)) a³
* UmbralRaptor
blinks at egg with a radiative transfer code.
<egg|zzz|egg>
UmbralRaptor: tbh nobody cares about the masses, so replacing G(M+m) with μ is fine
<egg|zzz|egg>
UmbralRaptor: ... should we define a μ bar to get rid of the remaining numbers
<UmbralRaptor>
hah
<UmbralRaptor>
Well, if you have time in years, distance in AU, and mass in solar masses…
<egg|zzz|egg>
UmbralRaptor: wait, μ *is* the reduced one, because it's the one you use with angular momentum: a³/μ = ω²
<egg|zzz|egg>
UmbralRaptor: so then μ-but-not-reduced should be such that a³/μ-but-not-reduced = T²
<egg|zzz|egg>
UmbralRaptor: clearly that parameter should be called м
<egg|zzz|egg>
!u м
<Qboid>
U+043C CYRILLIC SMALL LETTER EM (м)
<UmbralRaptor>
Sure, why not?
<egg|zzz|egg>
UmbralRaptor: s/.*/AΑA?אܐ?አⲀ?? /
<Qboid>
egg|zzz|egg thinks UmbralRaptor meant to say: AΑA?אܐ?አⲀ??
<UmbralRaptor>
Egg: no, that's mi response to the tweet I linked in KSPA
<egg|zzz|egg>
UmbralRaptor: also wait, I screwed up, it's a³ω²=μ right
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<aeTIos>
Hey when I open the flight plan window, there's nothing in there for some reason
<aeTIos>
it's just empty
<egg|zzz|egg>
aeTIos: are you in space?
<aeTIos>
no.
<aeTIos>
Is that it?
<egg|zzz|egg>
aeTIos: we don't know about your vessel unless it's in space
<egg|zzz|egg>
so we can't plan anything for it
<aeTIos>
fair enough, thanks then
<aeTIos>
:)
<egg|zzz|egg>
no problem
<egg|zzz|egg>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor a long curium hexahexaflexagon
<aeTIos>
hmmm the comms network indicators are so satisfying to watch
<UmbralRaptor>
!wpn egg
* Qboid
gives egg a private traversal
<egg|zzz|egg>
aeTIos: unrelated: maccollo found some fun square orbits