<Tr> <Th_colspan="2"> Tycho Brahe </Th> </Tr> <Tr> <Td_colspan="2"> Brahe wearing the Order of the Elephant </Td> </Tr> <Tr> <Th> </Th> <Td> Tyge Ottesen Brahe 14 December 1546 Knutstorp Castle, Scania, Denmark, Denmark--Norway (now Sweden) </Td> </Tr> <Tr> <Th> </Th> <Td> 24 October 1601 (1601 - 10 - 24) (aged 54) Prague, Habsburg Bohemia, Holy Roman Empire (now Czech Republic) </Td> </Tr>

What was the great contribution of tycho brahe to astronomy