Māmani (palanite)
Ko e māmani (fakaʻilonga: .svg){kind=small}
) ko e palanite ia hono tolu mei he laʻā ʻoku ʻiloa ko e ngaahi meʻa ʻo e ʻunivēsi ʻi he taulanga ʻo e Mālo e lelei KO E HĀ IA: taulanga ʻo e Mālo e lelei? Fili ha foʻi lea ʻi he lea fakatonga fakamoʻoni…
. Fakatatau ki he taimi mofi fakaʻatomi ko e ngaahi maʻuʻanga fakamoʻoni kehe, naʻe fokotuʻu ai ʻe māmani ʻa e taʻu ʻe 4600 miliona kuo ʻosi. Ko e ngaahi fetuʻutaki mamafa ʻo māmani mo e ngaahi meʻa kehe, tautautefito ki he laʻā mo e māhina, ko e satelaite pe ia ʻe taha ʻi māmani. Ko e fetuʻu ʻo māmani ko e laʻā ʻi he kongaloto ʻi he [ʻaho] ʻe 365.265, ʻoku ʻiloa ha taimi ko e taʻu moʻoni ʻi māmani. Ka ʻi he taimi ni, fetongitongi koeʻuhi tuʻo 366.265 ʻa e mamani.
.jpg)
ʻUlungaanga fakatuʻasino
fatuʻi vaheFotunga
fatuʻi vaheʻOku meimei ke fuopotopoto e fotunga ʻo māmani. ʻOku ʻi ai ha fanga kiʻi lafalafa ʻi he ngaahi vaʻakau pea ʻoku tupu takai ia ʻi he ʻekueta koeʻuhi ko e vilo ʻa māmani. ʻOku ngali tatau ʻa māmani ki ha fuopotopoto fakalafalafa, ʻa ia hono taiamita fakaʻekueta ʻoku lahi ange he kilomita ʻe 43 ʻi he taimita fakapole, neongo ko e fulihi ʻoku siʻi hifo ia ʻi he 1% ʻo e ʻavalisi ʻoku ofi ki māmani.
ʻAtakai mo vilo
fatuʻi vaheʻOku lau ʻa e vahaʻataimi ʻo e vilo ʻa e mamani ki he laʻā — ʻa ia ko e ʻaho ʻo e ngaahi fetuʻu — ko ha sekoni ʻe 86,400 ʻoku ʻuhinga ia ki he vahaʻa taimi 86,400.0025 (sekoni ʻa e Polokalama fakavahaʻapuleʻanga ki ʻiuniti (PFI)). ʻOku hoko kiʻi loloa ange ʻa e ʻaho ʻo māmani koeʻuhi hono fakatumotuma ʻe he ngaahi tau mo e māhina, ko e milisekoni ʻe 2 ki he ʻaho ki he teautaʻu.
Tataku
fatuʻi vaheExplanatory supplement to the astronomical ephemeris; London 1961