<Table> Caloris <Tr> <Td_colspan="2"> Mosaic of the Caloris basin based on photographs by the MESSENGER orbiter . </Td> </Tr> <Tr> <Th> Planet </Th> <Td> Mercury </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 30 ° 30 ′ N 189 ° 48 ′ W ﻿ / ﻿ 30.5 ° N 189.8 ° W ﻿ / 30.5; - 189.8 Coordinates: 30 ° 30 ′ N 189 ° 48 ′ W ﻿ / ﻿ 30.5 ° N 189.8 ° W ﻿ / 30.5; - 189.8 </Td> </Tr> <Tr> <Th> Diameter </Th> <Td> 1,550 km (963 mi) </Td> </Tr> <Tr> <Th> Eponym </Th> <Td> Latin for "heat" </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Mosaic of the Caloris basin based on photographs by the MESSENGER orbiter . </Td> </Tr>

Where is the caloris basin located on mercury