Check which objects modified recently

SELECT OBJECT_NAME,
    OBJECT_TYPE,
       TO_CHAR(CREATED,       'DD-Mon-RR HH24:MI') CREATED_DATE,
       TO_CHAR(LAST_DDL_TIME, 'DD-Mon-RR HH24:MI') LAST_MODIFIED_DATE,
       STATUS
FROM   USER_OBJECTS
WHERE  SYSDATE - LAST_DDL_TIME < 1000;