CREATE TABLE table_53961 ("NGC number" FLOAT, "Object type" TEXT, "Constellation" TEXT, "Right ascension  (  J2000  ) " TEXT, "Declination  (  J2000  ) " TEXT)

What is the average NGC number of everything with a Right ascension (J2000) of 05h33m30s?
SELECT AVG("NGC number") FROM table_53961 WHERE "Right ascension ( J2000 )" = '05h33m30s'
SELECT AVG("NGC number") FROM "table_53961" WHERE "Right ascension ( J2000 )" = '05h33m30s'