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
<egg|zzz|egg> mofh: yes because we happen to be looking at an orbit where ω is 90 degrees
<egg|zzz|egg> mofh: recall https://i.imgur.com/HzwN4Aw.png
<mofh> AHH, RIGHT.
<mofh> >_<
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<kmath> <anomiseditrix> TRUTH.😹 https://t.co/xhxO7iteY7
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<egg|zzz|egg> mofh: https://lejournal.cnrs.fr/billets/charpente-de-notre-dame-stop-aux-idees-recues interesting article, also mentions the Hermione that we saw
<egg|zzz|egg> (built from 2000 oaks!)
<_whitenotifier-5dfc> [Principia] pleroy opened pull request #2215: Proper name for the Taylor series - https://git.io/fjw4T
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<_whitenotifier-5dfc> [Principia] eggrobin labeled pull request #2215: Proper name for the Taylor series - https://git.io/fjw4T
<_whitenotifier-5dfc> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3696/
<_whitenotifier-5dfc> [Principia] pleroy pushed 2 commits to master [+0/-0/±2] https://git.io/fjw40
<_whitenotifier-5dfc> [Principia] pleroy 9ac6b15 - Proper name for the Taylor series.
<_whitenotifier-5dfc> [Principia] pleroy 2a99983 - Merge pull request #2215 from pleroy/Taylor Proper name for the Taylor series
<_whitenotifier-5dfc> [Principia] pleroy closed pull request #2215: Proper name for the Taylor series - https://git.io/fjw4T
<egg|zzz|egg> mofh: !@#$!@#$!%# I got bitten by the GRGS SP3 dialect
<egg|zzz|egg> I accidentally parsed the TOPEX/Poseidon orbit as standard SP3
<egg|zzz|egg> it parses correctly but the velocities are wrong by an order of magnitude, leading to bad interpolation
<egg|zzz|egg> leading to absurd perigee altitudes
<egg|zzz|egg> confusing the algorithm
<_whitenotifier-5dfc> [Principia] pleroy opened pull request #2216: Rewrite FukushimaEllipticBD - https://git.io/fjw4P
<egg|zzz|egg> !wpn mofh
* galois gives mofh a molybdenum corvid
<egg|zzz|egg> mofh: now I get a mean ω of +89.64(13)°, and a variability of ± 1.58166° (95%), that's a lot more reasonable
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<mofh> egg|zzz|egg: aaaaaaaaaAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
<mofh> is that YET ANOTHER SP3 dialect?!
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<egg|zzz|egg> mofh: no no it's one i knew about
<_whitenotifier-5dfc> [Principia] pleroy commented on pull request #2216: Rewrite FukushimaEllipticBD - https://git.io/fjw4x
<egg|zzz|egg> mofh: but it doesn't result in a parsing failure so I accidentally parsed that file as standard dialect, resulting in bad data
<mofh> yeah, a mean ω of that with that variability is what i'd eggspect from that algo
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<mofh> also I just went thru backlog and it seems that using Estrin vs. Horner INTRODUCES INACCURACIES for some of the EllipticK polynomials, wtf?
<mofh> I wasn't even aware that was a possibility
<mofh> (I guess that eggsplains your tweet to the cat yesterday)
<_whitenotifier-5dfc> [Principia] eggrobin labeled pull request #2216: Rewrite FukushimaEllipticBD - https://git.io/fjw4P
<mofh> (and yes I just got to this now I've been reading physics papers the past few days like crazy)
<egg|zzz|egg> mofh: the cat hasn't given much of an answer though
<egg|zzz|egg> mofh: mind you this is without FMA on either side
<mofh> I mean I wouldn't know where to begin myself, I don't know *how* one scheme would introduce error over the other
<mofh> ...so now that you made that comment I'm curious what the situation is like with FMAs on *both* sides.
<mofh> and to see if that results in the error of one resp. the other decreasing/vanishing.
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<egg|zzz|egg> mofh: topicquotes
<egg|zzz|egg> mofh: hevin
<egg|zzz|egg> mofh: IGS/IDS/ILRS
<egg|zzz|egg> mofh: double-double
<egg|zzz|egg> mofh: underlying 1-step method
<egg|zzz|egg> mofh: etc.
<egg|zzz|egg> mofh: meooooow
<mofh> egg|zzz|egg: meow
<mofh> egg|zzz|egg: good idée, let me start popping things off the mofhstack
<egg|zzz|egg> mofh: hm, maybe s/peri/apo/ isn't the best way to handle apoapsides
<egg|zzz|egg> mofh: this remark brought to you by the orbital apood
<mofh> apood?
<egg|zzz|egg> mofh: 'period'.replace('peri', 'apo')
<mofh> ROFL
<_whitenotifier-5dfc> [Principia] pleroy closed pull request #2216: Rewrite FukushimaEllipticBD - https://git.io/fjw4P
<_whitenotifier-5dfc> [Principia] pleroy pushed 7 commits to master [+2/-0/±11] https://git.io/fjwRx
<_whitenotifier-5dfc> [Principia] pleroy 413eae6 - Maclaurin series.
<_whitenotifier-5dfc> [Principia] pleroy de3c48b - Clarification.
<_whitenotifier-5dfc> [Principia] pleroy 3b497fb - Taylor, not Maclaurin.
<_whitenotifier-5dfc> [Principia] ... and 4 more commits.
<egg|zzz|egg> e = +0.00020046(26) not bad
<egg|zzz|egg> κ = +12.7000041(59) nice as well
<_whitenotifier-5dfc> [Principia] pleroy opened pull request #2217: Rewrite FukushimaEllipticBsDsMaclaurinSeries - https://git.io/fjw0y
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<mofh> egg|zzz|egg: yeah that's actually really good
<_whitenotifier-5dfc> [Principia] eggrobin labeled pull request #2217: Rewrite FukushimaEllipticBsDsMaclaurinSeries - https://git.io/fjw0y
<_whitenotifier-5dfc> [Principia] pleroy synchronize pull request #2217: Rewrite FukushimaEllipticBsDsMaclaurinSeries - https://git.io/fjw0y
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<egg|zzz|egg> meow
<egg|zzz|egg> !wpn whitequark, mofh, et al.
* galois gives whitequark, mofh, et al. a nebulum circle
<egg|zzz|egg> meow
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<SnoopJeDi> mofh, I read that as "a really stupid naming giraffe" at first and was very confused
<raptop> %s/giraffe/camel-lepoard/g
<SnoopJeDi> %s without the c flag makes my palms sweaty
<whitequark> what flag
<egg|zzz|egg> !u 🇨
<galois> 🇨: U+1f1e8 REGIONAL INDICATOR SYMBOL LETTER C
<raptop> c flag?
* raptop pretty much only does regexes in vim because that doesn't vary between OSes the way sed does
<raptop> ...also, wow is that line cursed.
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<kmath> <stephentyrone> @Gankro No idea I had been making asmr radars all these years.
<_whitenotifier-5dfc> [Principia] pleroy closed pull request #2217: Rewrite FukushimaEllipticBsDsMaclaurinSeries - https://git.io/fjw0y
<_whitenotifier-5dfc> [Principia] pleroy pushed 8 commits to master [+0/-0/±7] https://git.io/fjwEj
<_whitenotifier-5dfc> [Principia] pleroy bf42898 - Add the Fs polynomials and some support for Bs and Ds.
<_whitenotifier-5dfc> [Principia] pleroy 6bfe62c - Merge branch 'master' into EllipticBsDs
<_whitenotifier-5dfc> [Principia] pleroy c127152 - Something that works but doesn't deduce.
<_whitenotifier-5dfc> [Principia] ... and 5 more commits.
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<mofh> egg|cell|egg: seen today: "Pouchkine"
<egg|cell|egg> Mofh: well yes how else do you write that in French
<egg|cell|egg> Orbita oulitka
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<egg> whitequark: mofh: meow
<mofh> egg: meow
<egg|zzz|egg> mofh: i'm wondering whether to bother about that whole uncertainty of measurement thing at all in my orbit analyser
<egg|zzz|egg> basically the only thing for which it's vaguely relevant is "how many sigdec to show", and the actual useful intervals (for stationkeeping) are the variabilities of ω, or λ and τ at the equator, etc.
<egg|zzz|egg> the uncertainty on the mean value of ω' doesn't ultimately seem very interesting
<egg|zzz|egg> or Ω′
* egg|zzz|egg bites mofh
* egg|zzz|egg pokes mofh with a flyswatter
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<mofh> egg|zzz|egg: actually yeah, the variabilities are interesting (tho I suspect the uncertainty on the mean value of Ω′ specifically *might* be useful)
<mofh> like i'd need to think about this a bit
<egg|zzz|egg> mofh: well, the variabilities are interesting *on the things that you directly want to control*
<egg|zzz|egg> you don't care about Ω′ *directly*
<egg|zzz|egg> you care about the variability of λ wrt the nominal phasing, or of τ wrt the nominal mean solar time of ascending node in a heliosynch orbit
<egg|zzz|egg> Ω′ itself isn’t really interesting directly
<mofh> Hrm. I'm not sure that Ω′ is--wait, by Ω′ you mean the derivative of Ω? In that case yeah I agree.
<egg|zzz|egg> !u 🞛
<galois> 🞛: U+1f79b WHITE DIAMOND CONTAINING BLACK MEDIUM DIAMOND
<egg|zzz|egg> mofh: λ is longitude (at the node), τ is the mean (local) solar time (at the node), Ω is the right ascension of the ascending node
<egg|zzz|egg> (longitude as in surface longitude, not RA)
<egg|zzz|egg> mofh: ... TIL ja-Grek I guess https://translate.google.com/#view=home&op=translate&sl=ja&tl=fr&text=%E1%BC%A8%CE%BB%CF%8D%CF%83%CE%B9%CE%BF%CE%BD%20%CE%A0%CE%B5%CE%B4%CE%AF%CE%BF%CE%BD
<egg|zzz|egg> (not that it's better from el)
<UmbralRaptop> !wa 5536.4+1602
<galois> [WOLFRAM ERROR]This feature, WolframAlpha, has been deprecated due to WolframAlpha's strict new updates and policies.
<UmbralRaptop> ;wa 5536.4+1602
<kmath> UmbralRaptop: 5536.4 + 1602: 7138.4
<UmbralRaptop> Okay, my insurance seems to be negotiating about $7k in bills
<UmbralRaptop> Anyway, there's also $738.66 for the ambulance that the city of Fairfax provided
<egg|zzz|egg> !wpn UmbralRaptop
* galois gives UmbralRaptop a neodymium gluon
<UmbralRaptop> !wpn egg
* galois gives egg a adobe jagged crow
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* egg|zzz|egg pokes mofh in the mofhstack
<UmbralRaptor> papers… papers everywhere