Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_12780 ( "Satellite" text, "Launch date" text, "Carrier rocket" text, "Launch site" text, "COSPAR ID" text )

### Question ###
When was the satellite that has a COSPAR ID of 1967-042a launched?

### Accurate SQL ###

SELECT "Launch date" FROM table_12780 WHERE "COSPAR ID" = '1967-042a'