The planet Neptune was discovered in Capricornus by German astronomer Johann Galle , near Deneb Algedi ( δ Capricorni ) on September 23 , 1846 , which is appropriate as Capricornus can be seen best from Europe at 4:00 am in September .
The planet Neptune was discovered in this constellation by German astronomer Johann Galle , near Deneb Algedi ( δ Capricorni ) on September 23 , 1846 , which is reasonable as Capricornus can be seen best at 4:00 am in September .