raptop changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
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<kmath> <EricMamajek> Federico Marocco @NASAJPL & collaborators find new, nearby ultracool (Teff ~ 300K, prob Y-type) brown dwarf @ ~5.6… https://t.co/ZdMoiYdvAG
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<egg|work|egg> !wpn mofh
* galois gives mofh a missile
<egg|work|egg> !wpn whitequark
* galois gives whitequark a 𒄈
<mofh> wtf, !wpn actually returned a common wepon
<Raptop> The current iteration might have more actual weapons than math silliness
* mofh files a bug report
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* Raptop suggests submitting a pull request
<_whitenotifier-5dfc> [Principia] RCrockford commented on issue #2144: Extending the external API to allow for interaction with flight planning - https://git.io/fjrRd
<_whitenotifier-5dfc> [Principia] RCrockford edited a comment on issue #2144: Extending the external API to allow for interaction with flight planning - https://git.io/fjrRd
<_whitenotifier-5dfc> [Principia] RCrockford edited a comment on issue #2144: Extending the external API to allow for interaction with flight planning - https://git.io/fjrRd
<_whitenotifier-5dfc> [Principia] RCrockford edited a comment on issue #2144: Extending the external API to allow for interaction with flight planning - https://git.io/fjrRd
<egg|work|egg> mofh: mofhstack
<egg|work|egg> mofh: how's the weather,
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<mofh> egg|work|egg: I'm mellllllllllllllllllllllllllllllting
* UmbralRaptor stares at the notation for problem 2 in confusion https://photos.app.goo.gl/VmuFkbRsnV7XgTiC8
* UmbralRaptor sprays liquid nitrogen at mofh
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<mofh> UmbralRaptop: that is bloody awful notation, I can't even figure out what the shit they're trying to get at.
<UmbralRaptop> mofh: This is Sakurai chapter 1 >_<
<UmbralRaptop> According to the solution manual, you need stuff discussed in chapter 3
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<kmath> <stephentyrone> @johnregehr @jfbastien @UINT_MIN Well, that and it should really be AHalfLItre.cpp.
<mofh> UmbralRaptop: OH RIGHT I REMEMBER THAT ATROCITY NOW
<mofh> yeah, you do.
<mofh> the chapters cannot be followed in any linear order sanely.
<UmbralRaptop> aaaaaaaa
<mofh> Sakurai: it's prolly the best introductory "mathematical" QM text still, but it's very not good :/
* UmbralRaptop 🔪 Sakurai in the notation again
<UmbralRaptop> "Whoever heard of a student referred to as a coherent linear superposition of male and female with a particular phase relation?" well…
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<SnoopJeDi> mofh, what dont' you like about Sakurai?
<mofh> SnoopJeDi: the fact that you often need to understand chapter n+k, k>0, in order to be able to do problems in chapter n
<mofh> for depressingly many n
<SnoopJeDi> ah, gotcha
<SnoopJeDi> My quantum II class "used" it as a text, which means the prof's slides were like half from Sakurai and half his own creation. Problem sets were 100% his though so I never really sampled Sakurai's
<SnoopJeDi> I found the text very helpful in that class though, mostly because the prof's slides were...bad.
<mofh> Like the text itsself is okay, it's mostly the problem sets that are, erm, flawed.
<SnoopJeDi> good to know, thanks
<egg|cell|egg> 喵
* SnoopJeDi pets egg|cell|egg
* UmbralRaptop pets egg|cell|egg with a ket
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<mofh> 17:06:35 <@UmbralRaptop> "Whoever heard of a student referred to as a coherent linear superposition of male and female with a particular phase relation?" well…
* mofh looks at most of ##whitequark, for starters...
<UmbralRaptop> eggsactly!
* UmbralRaptop saw that line in Sakurai and, well, yeah
<kmath> <aprilarcus> 1940: Gender is an ∈ in {0,1} ⏎ 2000: Gender is a real ⏎ 2060: Gender is a vector in ℝ² ⏎ 2120: Patriarchy unifies with capitalism in SU(2) × U(1)
<UmbralRaptop> yeah, that too
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<_whitenotifier-5dfc> [Principia] eggrobin reviewed pull request #2221 commit - https://git.io/fjrgD
<_whitenotifier-5dfc> [Principia] eggrobin labeled pull request #2221: Rewrite JacobiSNCNDN - https://git.io/fjrLu
<kmath> <Matt_MYano> @youngvulgarian Waiter waiter there's a French journalist in my soup
<_whitenotifier-5dfc> [Principia] pleroy reviewed pull request #2221 commit - https://git.io/fjr2q
<_whitenotifier-5dfc> [Principia] pleroy synchronize pull request #2221: Rewrite JacobiSNCNDN - https://git.io/fjrLu
<_whitenotifier-5dfc> [Principia] Pending. Build queued… - 
<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3711/
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<oeuf> mofh: meow
<_whitenotifier-5dfc> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3711/
<mofh> oeuf: miaou
<oeuf> mofh: fishy fish
<mofh> (also TIL FR is the largest seafood market in Europe... tho I guess that makes sense)
<oeuf> mofh: mislabeled fish seems like a problem, you're going to end up with anatomy papers showing dissections of the wrong fish,
<mofh> yes, precisely,
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<mofh> ugh so I actually think I was slightly sick on the Friday/Saturday and that's over but it's resulted in, once again, having a population of neutrophils thinking that my bronchi are a cellular group that needs application of peroxides.
<mofh> I do hope this dry cough lasts less long than 3 months
<mofh> (last one was so bad that a coughing spell almost had me faint in the middle of crossing the road b/c I couldn't catch a breath)
<_whitenotifier-5dfc> [Principia] pleroy closed pull request #2221: Rewrite JacobiSNCNDN - https://git.io/fjrLu
<_whitenotifier-5dfc> [Principia] pleroy pushed 5 commits to master [+0/-0/±6] https://git.io/fjra3
<_whitenotifier-5dfc> [Principia] pleroy ddbeba3 - Rewrite JacobiSNCNDN.
<_whitenotifier-5dfc> [Principia] pleroy c689760 - Remove TODO.
<_whitenotifier-5dfc> [Principia] pleroy e02eb3a - Some simplification.
<_whitenotifier-5dfc> [Principia] ... and 2 more commits.
<UmbralRaptor> mofh: This is uncomfortably close to my recent post-cold sinus problems
<mofh> it's really annoying b/c all other signs of inflammation are gone! it's just this one sub-population trying to valiantly attack my bronchi in vain like some sort of lost and particularly drunken Roman regiment.
<oeuf> mofh: romanes eunt domus
<mofh> [[Citation Needed]]
<oeuf> mofh: so i guess i'm redoing the orbit analyser based on integrating osculating elements, since that works much better...
<mofh> I'm honestly genuinely surprised that integrating osculating elements works as well as it does.
<mofh> Logically it feels like it shouldn't?
<oeuf> (still need the discrete stuff for stationkeeping, e.g. deviations of equatorial crossings from the nominal ground track)
<kmath> <✔Tesco> @mattyjstock Hi Matthew, I have had a response from my support team. They have advised the date code on the relish… https://t.co/PkPpZIJUjW
<UmbralRaptor> Something something type II cakes
<mofh> I mean that's just the second total lunar eclipse after the vernal equinox, which may or may not lie within the current equinoxial(? - the time from equinox to equinox, as opposed to gregorian/julian calendar)
<B787_300> mofh: like i understand the simplicity of JD, but that is just confusing for most people
<UmbralRaptor> That's way too few digits to be JD
<egg|zzz|egg> yeah that cannot be JD
<egg|zzz|egg> looks like day-of-year?
<egg|zzz|egg> yeah that would be consistent with the 20th of May
<egg|zzz|egg> (JD *would* be fun but that's not it)
<egg|zzz|egg> mofh: also what are you talking about with your lunar egglipses
<mofh> egg|zzz|egg: the second blood moon past the vernal equinox
<mofh> egg|zzz|egg: it's the expiry date on this instant meal
<egg|zzz|egg> okay but it's not eggspressed that way sadly
<mofh> I mean yes, but that's also relish
<UmbralRaptor> That is a vaguely ominous expiration date
<egg|zzz|egg> mofh: UmbralRaptor: hm, the period corresponding to the argument of latitude is the nodal period, right?
<egg|zzz|egg> and the one for the mean anomaly is the anomalistic period
<UmbralRaptor> unsure
<egg|zzz|egg> what's the period corresponding to the mean longitude
<egg|zzz|egg> cc B787_300
<B787_300> no idea
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<galois> [WIKIPEDIA] Orbital period#Varieties of orbital periods | "The orbital period is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun, moons orbiting planets, exoplanets orbiting other stars, or binary stars.For objects in the Solar System, this is often..."
<mofh> egg|zzz|egg: I believe so, but I'm not sure.
<UmbralRaptop> partially helps
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<egg|zzz|egg> !wpn mofh
* galois gives mofh a tellurium zirconium moment
<egg|zzz|egg> mofh: also since principia has elliptic functions & integrals, we could stop solving the Kepler equation by bisection and use that instead :-p
<egg|zzz|egg> wait, does that work
<egg|zzz|egg> hm no it's just a series of bessel functions
<UmbralRaptor> aaaaaa
<egg|zzz|egg> mofh_: hmmm https://www.researchgate.net/publication/226069452_A_method_solving_Kepler's_equation_without_transcendental_function_evaluations
<egg|zzz|egg> > Toshio Fukushima
<egg|zzz|egg> it looks like the sidereal period
<egg|zzz|egg> on J07, from average of times between ascending nodes, I have T☊ = +8.5570(86) × 10^+4 s
<egg|zzz|egg> from average of times between crossings of a plane orthogonal to the equator, I have T* = +86165.56(30) s
<egg|zzz|egg> from average of times between periapsides, I have T = +8.643(14) × 10^+4 s
<egg|zzz|egg> whereas from regressions on the osculating elements (no averaging to soften short-period variations, hence the high uncertainties)
<egg|zzz|egg> T_u = +8.55786(32) × 10^+4 s
<egg|zzz|egg> T_l = +86165.760(15) s
<egg|zzz|egg> T_M = +8.6170(37) × 10^+4 s
<egg|zzz|egg> on J01,
<egg|zzz|egg> T☊ = +86140.15(63) s
<egg|zzz|egg> T* = +86144.81(12) s
<egg|zzz|egg> T = +86147.24(66) s
<egg|zzz|egg> and with osculating elements,
<egg|zzz|egg> T_u = +86140.185(15) s
<egg|zzz|egg> T_l = +86144.230(11) s
<egg|zzz|egg> T_M = +86145.83(10) s
<egg|zzz|egg> as can be expected, the mean longitude is the one that gets the lowest uncertainty on its slope (it should be least affected by short-period variations of the osculating elements)
<egg|zzz|egg> mofh: I guess I can then use that sidereal period to take a continuous moving average of the equinoctial elements over that period, from which I can compute mean elements at any given time (and precessions etc. as needed)?
<kmath> <whitequark> @atomicthumbs the gay cable. here's the spec https://t.co/bS2KWPbxTU https://t.co/8yC3Ni62WB
<egg|zzz|egg> mofh: does filtering like that make sense?
<egg|zzz|egg> mofh: meow
<egg|zzz|egg> mofh: also mofhstack
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