CREATE TABLE table_48807 ("Name" TEXT, "Launched" TEXT, "Vehicle" TEXT, "Ceased operation" TEXT, "Notes" TEXT)

What was the ceased operation that launched June 29, 1961?
SELECT "Ceased operation" FROM table_48807 WHERE "Launched" = 'june 29, 1961'
SELECT "Ceased operation" FROM "table_48807" WHERE "Launched" = 'june 29, 1961'