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Pianeta nano.
En pianeta nano l'è 'n ogèt celèst che g'ha màsa planetària ma che l'è mìa clasificàbil gne come pianéta gne come satèlite natüràl, dóca l'è definìt come 'n ogèt en òrbita dirèta entùren al Sul, che g'ha 'na màsa grànda asé de rià a ìga 'na fùrma sférica e che l'è riàt a ìga 'n eqilìbre idrostàtich sóta la sò stèsa fórsa gravità, ma che l'è mìa riàt a snetà fò la sò fàsa orbitàla dei ogècc che g'ha dimensiù confrontàbii[1]. Chèsta definisiù l'è stada adotàda dòpo béghe e discusiù 'ntra i astrònomi che g'ha partecipàt ai convégn de l'Uniù Astronòmica Internasiunàla endèl més de óst del 2006. Prim de alùra sèrte vergü dei còrp celèscc che dòpo sarès stacc clasificàcc come pianéti nàni i éra cunsideràcc pianéti a töcc i efècc, compàgn de Plutone che per tat tép l'è stat cunsideràt chèl dei nöf dei pianéti del nòst Sistema Solar.
Al dé d'encö i ogècc clasificàcc come pianéti nàni del nòst Sistema Solar i è sich:
- ↑ «Definition of a Planet in the Solar System: Resolutions 5 and 6» (PDF). IAU 2006 General Assembly, International Astronomical Union, 2006-08-24. Vardad in data 2008-01-26.
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