Sextant GHA Azimut Limbe Culmination Achernar Zn Alizés Dip Ho Fix Méridienne Crépuscule nautique Polaris Sirius Hauteur observée Traversée Erre Estime Déclinaison LHA SHA Aldébaran Canopus Capella Vega Arcturus Horizon Réfraction Semi-diamètre Intercept Sextant GHA Azimut Limbe Culmination Achernar Zn Alizés Dip Ho Fix Méridienne Crépuscule nautique Polaris Sirius Hauteur observée Traversée Erre Estime Déclinaison LHA SHA Aldébaran Canopus Capella Vega Arcturus Horizon Réfraction Semi-diamètre Intercept

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