i nerd sniped myself tonight and i imagine the NSA operative who is assigned to me is very confused by the increasingly erratic and frustrated google searches for HOW DO I CALCULATE THE MOON WHERE IS THE MOON
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ok so back to the moon thing, i found another resource and i think i understand the why behind the asinine coordinate systems a little better but it also glosses over the math so it's kinda useless at the same time. i'm tempted to just make shit up and move on, but it would bother me that the function was wrong if i did that
@aeva i have copies of the explanatory supplement to the astronomical almanac in case i ever get enough of an urge to write astronomical software – both the 1960s edition and the more recent third edition that takes into account modern atomic time and general relativity and 🤯
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@aeva i have copies of the explanatory supplement to the astronomical almanac in case i ever get enough of an urge to write astronomical software – both the 1960s edition and the more recent third edition that takes into account modern atomic time and general relativity and 🤯
@fanf I just put in an order for the 2025 Astronomical Almanac - what is this about an explanatory supplement?
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ok so back to the moon thing, i found another resource and i think i understand the why behind the asinine coordinate systems a little better but it also glosses over the math so it's kinda useless at the same time. i'm tempted to just make shit up and move on, but it would bother me that the function was wrong if i did that
after a good night's sleep and reflecting on what I've learned so far, I've decided to follow the classic computer science strat: when faced with a problem you don't know how to solve, simply do something else, and pretend that is what you meant to do all along.
not only are horizontal coordinates the choice reference frame for backyard astronomers, the "altitude h" angular measurement is probably closer to the solution I wanted than my earlier framing of the problem. narf
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@fanf I just put in an order for the 2025 Astronomical Almanac - what is this about an explanatory supplement?
@aeva https://aa.usno.navy.mil/publications/exp_supp roughly speaking it explains the mathematical models used to caclculate the almanac
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@jkaniarz where I currently am stuck is how do you convert between the three when it is not the vernal equinox
@aeva If you know the position at the previous equinox, I think it’s as simple as spinning the moon around the earth (in the plane of the moons orbit) for 2*PI*t/27.3 radians, then spinning the earth for 2*PI*t radians.
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@aeva https://aa.usno.navy.mil/publications/exp_supp roughly speaking it explains the mathematical models used to caclculate the almanac
@fanf that sounds useful. looks like it is out of print though?
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after a good night's sleep and reflecting on what I've learned so far, I've decided to follow the classic computer science strat: when faced with a problem you don't know how to solve, simply do something else, and pretend that is what you meant to do all along.
not only are horizontal coordinates the choice reference frame for backyard astronomers, the "altitude h" angular measurement is probably closer to the solution I wanted than my earlier framing of the problem. narf
the math's not quite right, but i managed to get the moon more or less working
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@aeva god, on the 3rd day:
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This is the best post to read entirely out of context that I have seen in years.
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astronomy math is out of this fucking world btw like want to know where the moon is? great buckle up you're in for a few hundred years of bizarre hacks and lots of exciting questions like "wait, why are they using the julian calendar?"
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This is the best post to read entirely out of context that I have seen in years.
@CliftonR :3
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@aeva god, on the 3rd day:
@halcy :3
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astronomy math is out of this fucking world btw like want to know where the moon is? great buckle up you're in for a few hundred years of bizarre hacks and lots of exciting questions like "wait, why are they using the julian calendar?"
in a way magpie math is kinda refreshing, like imagine not throwing everything away every few years because of industry fads
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Questo post è eliminato!
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astronomy math is out of this fucking world btw like want to know where the moon is? great buckle up you're in for a few hundred years of bizarre hacks and lots of exciting questions like "wait, why are they using the julian calendar?"
@aeva I think part of it is we stopped trying to guess based on date and moved to measurements and short term extrapolation
Gli ultimi otto messaggi ricevuti dalla Federazione
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Alfredo Facchini
BREVI CONSIDERAZIONI SULLA MORTE DI CHARLIE KIRK
Faccio mie le parole di Ava Raine: “Se vuoi che le persone ti dicano parole gentili quando te ne vai, dovresti dire parole gentili mentre sei in vita”.
E Charlie Kirk, in vita, è stato tutt’altro che gentile: campione di razzismo, omofobia, islamofobia; acceso antiabortista e convinto sostenitore del sionismo e dell’apartheid israeliano. Non scherziamo. La memoria, in questo caso, serve a smascherare, non a ripulire.
La fine che ha fatto riguarda solo il suo mondo: un universo malato di armi e sproloqui nazistoidi. È lo specchio del mondo che ha costruito. Se lo santifichi, sei come lui.
Che sia chiaro: questo non significa che meritasse una pallottola. L’eliminazione fisica, in questo preciso momento storico, è sempre più appannaggio dei poteri. Sono gli Stati a praticarla, apertamente o nell’ombra: basta guardare alla Palestina. Qui la morte è seriale, pianificata, industriale. Non c’è simmetria possibile: la violenza organizzata, sistematica e impunita appartiene ai dominanti. Ricordarlo è fondamentale per non cadere nella trappola della falsa equivalenza.
Non è la “giustizia fai da te”, né il gesto isolato di singoli a segnare l’epoca: è la violenza organizzata degli Stati, degli eserciti, delle polizie, dei servizi segreti. La pallottola che uccide un singolo non è paragonabile all’apparato militare che devasta interi popoli. Una morte individuale non sposta i rapporti di forza: è solo una parentesi.
Ma il punto non è Charlie Kirk. Il punto è la narrazione che si costruisce intorno a una morte così. Il mainstream corre subito a sterilizzare le contraddizioni, addomesticare il dibattito. Mentre la destra fa la destra con le sue farneticazioni. Si riposiziona nella parte “aggredita”, quindi da difendere.
Il rischio vero non è il singolo proiettile, è il racconto che lo segue: che giustifica nuove strette repressive, che alimenta la falsa equivalenza tra chi opprime e chi resiste.La vera battaglia è qui: smontare la retorica, fare luce sugli interessi, svelare la trama che trasforma un fanatico in un martire. Non cadere nella trappola è un dovere politico.
#alfredoFacchini
#charliekirk
#razzismo
#omofobia #islamofobia
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the reason that IPv6 adoption is lagging behind is because it does not support the evil bit
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Mario Giordano: io sono...🤬
Io: io sono Charlie Hebdo 😍
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Quanto ha fatto caldo quest’estate in cinque grafici
@politica
https://pagellapolitica.it/articoli/caldo-estate-2025-grafici
È stata la quinta più calda dal 1950, con aumenti delle temperature in tutte le regioni italiane e in gran parte d’Europa
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Today’s #Muppets GIF of the Day is…
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Wordle 1,549 3/6*
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🟩🟩🟩🟩🟩WordleBot
Skill 99/99
Luck 55/99
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Glasgow, 1980.
Photo by Raymond Depardon
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I like to follow interesting people. Interesting to me. For what they do, or think, or the way they are. I have a lot of interests to be honest. This include some people with different ideas or preferences. Sometimes I am just curious. Well, it's all folks.
