UmbralRaptop changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Fano. We currently target 1.3.1, 1.4.x, 1.5.1, and 1.6.1. <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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<_whitenotifier-5dfc> [Principia] pleroy synchronize pull request #2213: Extract the nome function - https://git.io/fjVgz
<_whitenotifier-5dfc> [Principia] Pending. Build queued… - 
<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3694/
<_whitenotifier-5dfc> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3694/
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<_whitenotifier-5dfc> [Principia] pleroy closed pull request #2213: Extract the nome function - https://git.io/fjVgz
<_whitenotifier-5dfc> [Principia] pleroy pushed 6 commits to master [+0/-0/±6] https://git.io/fjVPA
<_whitenotifier-5dfc> [Principia] pleroy 8737ce3 - The nome.
<_whitenotifier-5dfc> [Principia] pleroy e8430a3 - Export a static polynomial from the Maclaurin class.
<_whitenotifier-5dfc> [Principia] pleroy e9b5579 - Remove the coefficients.
<_whitenotifier-5dfc> [Principia] ... and 3 more commits.
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<discord-> S​himotsuki Haruka. — why do y,z,vy,vz in initial_state_jd_2433282_500000000.cfg differ from results from JPL Horizons?
<discord-> S​himotsuki Haruka. — i want to add some planets to Solar System and i have worked out state vectors with orbital elements
<discord-> S​himotsuki Haruka. — @egg
<discord-> S​himotsuki Haruka. — i noticed that if i rotate the yz-plane by 0.409092804222328,figures in initial_state_jd_2433282_500000000.cfg and JPL Horizons are the same
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<discord-> e​gg. — @Shimotsuki Haruka they should be the same as those from Horizons, given that they come from Horizons; did you use the right settings in Horizons?
<discord-> e​gg. — you don't have reference plane=FRAME in the table settings
<discord-> e​gg. — @Shimotsuki Haruka you need to select "Earth mean equator and equinox of reference epoch" as your reference plane
<discord-> e​gg. — by default it's ecliptic instead of ICRS axes
<discord-> e​gg. — that yz rotation of 0.409092804222328 is the obliquity of the ecliptic
<discord-> S​himotsuki Haruka. — oh
<discord-> S​himotsuki Haruka. — yes they are the same
<discord-> S​himotsuki Haruka. — thanks a lot
<discord-> e​gg. — you're welcome
<discord-> e​gg. — (0.409092804222328 = 23°,439291111169204)
<UmbralRaptop> What is the correct formatting of the degree symbol and comma in this conteggst?
<discord-> G​regrox. — @egg how easy or difficult is it to get spherical harmonics stuff for an arbitrary body?
<discord-> G​regrox. — for some really lumpy asteroid or something
<discord-> G​regrox. — moreover, how would one do it, and would it be worth it
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<discord-> B​utcher. — @egg does principia model the moon as uniform density?
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<discord-> S​tandecco. — no, it has mascons
<discord-> B​utcher. — Oh nice.
<discord-> B​utcher. — So anything I put in orbit will likely crash into it eventually.
<discord-> S​tandecco. — yep, unless it's in one of those holy inclinations
<discord-> e​gg. — @Standecco really there are a lot of inclinations available, just only specific altitudes for each inclination
<kmath> <eggleroy> Ryan P. Russel and Martín Lara (2006), Repeat Ground Track Lunar Orbits in the Full-Potential Plus Third-Body Probl… https://t.co/9lt46X9ssR
<discord-> B​utcher. — Looks like some light reading. 😬
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<_whitenotifier-5dfc> [Principia] pleroy opened pull request #2214: Rewrite EllipticK - https://git.io/fjVd0
<_whitenotifier-5dfc> [Principia] Pending. Build queued… - 
<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3695/
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<discord-> G​regrox. — @egg did you see my question above?
<_whitenotifier-5dfc> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3695/
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