20:22 <_whitenotifier-ee4> [Principia] pleroy closed pull request #3783: Add a thread to asynchronously prolong the ephemeris in the FlightPlan - https://github.com/mockingbirdnest/Principia/pull/3783

20:22 <_whitenotifier-ee4> [Principia] pleroy closed issue #3483: Computation failed with error 4 when extending flight plan - https://github.com/mockingbirdnest/Principia/issues/3483

21:36 <queqiao-> ⟨makoivis⟩ https://matrix.mockingbirdnest.com/_matrix/media/r0/download/matrix.mockingbirdnest.com/mdOzmGXCEVPreijgBVRWAxbs/Screenshot_2023-10-24_at_23.36.00.png

21:36 <queqiao-> ⟨makoivis⟩ FO!

21:37 <queqiao-> ⟨egg⟩ ?

21:39 <queqiao-> ⟨makoivis⟩ finally got my first orbit with principia installed

21:39 <queqiao-> ⟨makoivis⟩ not that impressive but hey, at least principia works as intended and does things

21:43 <queqiao-> ⟨makoivis⟩ what causes the inclination to change over time?

21:44 <queqiao-> ⟨Al₂Me₆⟩ It's not the inclination but the longitude of ascending node that's changing (nodal precession). This is due to the oblateness of the Earth, which is modeled in Principia. (Inclination changing is a more exotic effect.)

21:47 <queqiao-> ⟨makoivis⟩ ah I knew about nodal precession, I guess I read the trajectory wrong here

21:48 <queqiao-> ⟨Al₂Me₆⟩ The orbit analyser can be useful here.

22:20 <queqiao-> ⟨clayel⟩ isnt the changing of the lan slightly different than nodal precession? where nodal precession is the rotation of the periapsis and apoapsis while lan changing is the rotation of the entire orbit relative to space

22:21 <queqiao-> ⟨clayel⟩ unless im thinking of something else

22:34 <queqiao-> ⟨egg⟩ You are thinking of apsidal precession.

22:35 <queqiao-> ⟨egg⟩ Note *nod*al precession, the precession of the *node*, the thing whose longitude we are talking about. As opposed to *apsid*al precession, the precession of the *apsides* (whose argument we could be talking about).

22:37 <queqiao-> ⟨lpg4999⟩ now it feels like we should also have a definition for noodle precession