Metadata
Author: WikiMatrix
Data
English[en]
Being very difficult to measure, only about 60 stellar parallaxes had been obtained by the end of the 19th century, mostly by use of the filar micrometer.
Spanish[es]
Al ser muy difícil de medir, solo se habían obtenido alrededor de 60 paralajes estelares a fines del siglo XIX, principalmente mediante el uso del micrómetro filar.