リギルケンタウルスMeanings1nounRigil Kentaurus; Alpha CentauriastronomyThe brightest star in the constellation Centaurus; also known as Alpha Centauri. Used in astronomical contexts.リギルケンタウルスは、ケンタウルス座ざで最もっとも明あかるい恒こう星せいです。Rigil Kentaurus is the brightest star in the constellation Centaurus.