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->
⟨Soviet Onion⟩ GR solely through SR ? Interesting
<queqiao->
⟨egg⟩ ⟪Stonesmile⟫ MJ and TWP use the same LAN; Principia […] ⮪ well, no, everyone else is wrong, Principia is right; but we’ll fix everyone else :-p
<queqiao->
⟨Stonesmile⟩ Has this fix been tested with TWP for example?
<queqiao->
⟨egg⟩ no, but as long as it gets its data from the game and doesn’t hardcode a dump from the game, it should be fixed just like MJ
<queqiao->
⟨egg⟩ (we just rotated the universe by 90°)
<queqiao->
⟨Stonesmile⟩ Oh, so it isn't some dynamic thing that can change depending on situation?
<queqiao->
⟨Stonesmile⟩ +(It sounded like that when you described the fix at some point)
<queqiao->
⟨egg⟩ well, the orientation of the universe depends on where you are. But the inconsistency was just that the universe was always 90° off from the celestial reference frame used by the orbit analyzer.
<queqiao->
⟨egg⟩ * analyser.
<queqiao->
⟨egg⟩ (you should never look at the stock/MJ orbital elements of a vessel orbiting a faraway body, because these will be in the wrong reference frame. But now, for the active vessel, you still shouldn’t look at them, but it’s only because they are osculating.)
<queqiao->
⟨Stonesmile⟩ But they wouldn't change between the space center scene and flight, right?
<queqiao->
⟨egg⟩ as long as flight is near the home body.
<queqiao->
⟨Stonesmile⟩ So a trajectory that TWP gives fro a Mars -> Earth transfer might have the wrong LAN if planned in the space center instead of in flight around Mars?
<queqiao->
⟨Stonesmile⟩ * for
<queqiao->
⟨egg⟩ yes, it probably would.
<queqiao->
⟨egg⟩ not just LAN.
<queqiao->
⟨egg⟩ the inclination and argument of periapsis will be wrong too.
<queqiao->
⟨Stonesmile⟩ Was that the case before?
<queqiao->
⟨egg⟩ Yes, nothing new there
<queqiao->
⟨egg⟩ The new thing is consistency in the case where the difference was just 90°
<queqiao->
⟨egg⟩ But other than that, we’re still tilting the universe, and everyone else is still oblivious
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<queqiao->
⟨pEdro⟩ Is the orbital decay of phobos a phenomenon when using principia ?
<queqiao->
if not, why not ? stepsize ?
<queqiao->
⟨BeastyOne⟩ A step size of 100 million years might be the key to net positive fusion energy
<queqiao->
⟨test_account⟩ Orbital decay of Phobos seems to be caused by tidal deformation of Mars by Phobos somehow, don't know how it works but am sure it's modeled in game