CREATE TABLE table_name_56 (launched VARCHAR, spacecraft VARCHAR, time_elapsed VARCHAR)
What Launched has both a Spacecraft of Ulysses and 491 days (1 yr, 4 mo, 3 d) as Time elapsed?
SELECT launched FROM table_name_56 WHERE spacecraft = "ulysses" AND time_elapsed = "491 days (1 yr, 4 mo, 3 d)"