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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@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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@enverdemichelis Istria e Dalmazia
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Makemake sotto osservazione: il telescopio Webb rileva gas metano sul pianeta nano
https://leganerd.com/2025/09/15/makemake-sotto-osservazione-il-telescopio-webb-rileva-gas-metano-sul-pianeta-nano/
@scienza
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È successo di nuovo: un uomo di 41 anni è morto questa mattina all'alba dopo essere stato colpito con una pistola #taser dalle forze dell'ordine. La tragedia si è consumata all'alba in via Beethoven, nella frazione di Massenzatico di Reggio Emilia.
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Nell’Ue 27,5 milioni di persone in grave deprivazione materiale
@news
https://www.eunews.it/2025/09/15/nellue-275-milioni-di-persone-in-grave-deprivazione-materiale/
Eurostat fotografa per il 2024 una situazione analoga a quella degli ultimi anni. Rispetto al 2023 un lieve calo di 900mila persone, Italia quinta
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Consumo di suolo e diritti eco-sistemici: guarda il nostro videopodcast
@anarchia
Aree verdi, corridoi ecologici, fauna urbana, ripristino e deurbanizzazione.. Questi sono solo alcuni dei temi affrontati nella prima puntata del videopodcast curato da DINAMOpress. La puntata ha visto la partecipazione di Alessandra Valentinelli, del Forum exSnia, e di Stefano Simoncini,...https://www.rivoluzioneanarchica.it/consumo-di-suolo-e-diritti-eco-sistemici-guarda-il-nostro-videopodcast/
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@eccosilvia parole molto sagge. Invece non solo assistiamo a eventi orrendi, ma molti fanno da amplificatore diffondendo odio su odio, spesso recitando la parte delle pecorelle buone.
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@kappazeta @GustavinoBevilacqua @thunderpussycat (il talk di @fabrixxm è il motivo per cui io non terrò un talk sul fediverso al linux day :D )
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@greenpeace a step back 200000 years, or a trip to France
(to be fair, in France said raw meat comes with plenty of vegetables, bread and/or other carbs, and some care in checking the health of the animals and how the meat has been treaded through the whole process)
