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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<galois> title: Caltech IPAC on Twitter: "Astro Grad Students: It's time to apply for @caltechipac's 2020 Visiting Graduate Fellowship Program! There are several six-month paid positions to conduct PhD-level research with IPAC scientists at our #Pasadena office at @Caltech. Deadline: Aug. 23, 2019… https://t.co/PnZnsIZZcs"
<Iskierka> I would normally call that a long time for a severe problem but I've never had to see one
<UmbralRaptor> ¯\_(ツ)_/¯
<UmbralRaptor> Well, if I die, you have a decent chance of knowing why
* Iskierka note to self: poke umbral on 07-12 to see if alive
<UmbralRaptor> Hah =S
<B787_300> UmbralRaptor: if you still have friends in KC they just got a pretty massive tornado
<UmbralRaptor> aaaααα
<B787_300> Yeah... tornadoes all over the place this week
<_whitenotifier-5dfc> [Principia] pleroy pushed 3 commits to master [+0/-0/±4] https://git.io/fj0Tq
<_whitenotifier-5dfc> [Principia] pleroy 1aee080 - Fix problems found on Linux.
<_whitenotifier-5dfc> [Principia] pleroy da59828 - There is now a .cpp in physics/.
<_whitenotifier-5dfc> [Principia] pleroy 858ab5d - Merge pull request #2183 from pleroy/Linux Fix problems found on Linux
<_whitenotifier-5dfc> [Principia] pleroy closed pull request #2183: Fix problems found on Linux - https://git.io/fjRAc
<egg|cell|egg> Mofh: meow
<egg|cell|egg> UmbralRaptor: my neurologist visits are scheduled one year in advance but it's a yearly recurrent thing, not something new
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<egg|z|egg> UmbralRaptor: B787_300: Shapiro, B. E., “TOPEX/Poseidon Repeat Orbit and Reference Grid Definition using a JGM2 Gravity Field,” Jet Propulsion Laboratory IOM FOS 93 - 028, August 5, 1993 (Internal Document).
<egg|z|egg> aaaaaaaaaaaagh internal document
<egg|z|egg> "As the older analytical theories often do not deliver the required accuracy, and the implementation of the newer theories requires access to the internal documentation of other space agencies or journal papers of limited access, other available theories have been investigated to be implemented and operationally used at GSOC"
<egg|z|egg> http://adsabs.harvard.edu/abs/1991ads..confR....G is similarly unfindable
<galois> title: Periodic gravitational perturbations for conversion between osculating and mean
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<_whitenotifier-5dfc> [Principia] fat-lobyte opened issue #2185: Make Warp to Maneuver Node lead time tunable - https://git.io/fj0qg
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<UmbralRaptor> aaaaaa
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<egg|work|egg> UmbralRaptor: ?
<galois> title: 1966IAUS...25..363S Page 363
<UmbralRaptor> egg|work|egg: citation: internal document
<egg|work|egg> UmbralRaptor: yeah
<egg|work|egg> this has annoyed the GSOC folks too
<egg|work|egg> but they solved it by making their own thing which you can actually read
<UmbralRaptor> hrm
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<egg|z|egg> UmbralRaptor: mofh: gah I don't know how to orbit analysis
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<egg|z|egg> taking mean time between perigees or mean time between nodes is nice and doesn't require assumptions on the orbit, but it can lead to aberrant results on 4-perigee orbits and the like
<egg|z|egg> and computing actual mean elements requires a mean element theory; for J2 there are plenty of those, but I also need something that works for weirder perturbations (what if you have an orbit around Jool or something)
<egg|z|egg> gah.
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<egg|z|egg> mofh: meeeeeeoooooooooow
<egg|z|egg> UmbralRaptor: meow
* UmbralRaptor scritches egg|z|egg with a laptop corner
* egg|z|egg purrs
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<galois> title: Examining Implicit Discretization in Spectral Schemes
<egg|cell|egg> UmbralRaptor: mofh: how do I orbits
<egg|cell|egg> How orbits
<UmbralRaptor> egg|cell|egg: like Douglas Adams wrote: throw yourself at the ground and miss
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<galois> title: Mark Marley on Twitter: "What this means is that unless you are constantly evolving new life every hour on the hour there is NO internal brown dwarf habitable zone. None. You could ask anyone who studies these objects and they could tell you this."
<galois> title: mcc on Twitter: "Gods are asleep, implement transhumanism"
<B787_300> UmbralRaptor: what paper is he referring to?
<B787_300> Also gods are nonexistent... although that many boobs is not interesting
<UmbralRaptor> B787_300: https://arxiv.org/abs/1905.11410
<B787_300> ... I mean floating in the atmosphere of venus I can buy. But anywhere there is a lot of thermal activity just seems wrong
* egg|z|egg stares at satellite orbits
* egg|z|egg screams
<egg|z|egg> how do i describe satellite orbits in the presence of weird perturbations that i potentially can't model without being eaten by a singularity when e is smol
* egg|z|egg stabs 4-apsis orbits
<egg|z|egg> B787_300: apsides! https://i.imgur.com/24IlyZL.png
<B787_300> ... you have gone beyond my knowledge of orbits
<egg|z|egg> B787_300: you should play KSP with principia, you come across that phenomenon very easily
<egg|z|egg> B787_300: IRL it happens with very low eccentricity satellites, e.g. TOPEX/Poseidon (and its friends the Jasons) have 4 apsides per orbit
<B787_300> Maybe once I get power back
<egg|z|egg> B787_300: see "On satellite orbits with very small eccentricities", fig 1 http://articles.adsabs.harvard.edu//full/1961AJ.....66..129I/0000131.000.html
<galois> title: 1961AJ.....66..129I Page 131
<B787_300> Interesting