What are the notes of the satellite whose nssdc id number is 1959-002a?
CREATE TABLE "launches" (
  "mission_no" text,
  "cover_name" text,
  "launch_date" text,
  "nssdc_id_no" text,
  "alt_name" text,
  "camera" text,
  "notes" text
);
SELECT "notes" FROM "launches" WHERE "nssdc_id_no"='1959-002A';