CREATE TABLE table_10401 ("NGC number" FLOAT, "Object type" TEXT, "Constellation" TEXT, "Right ascension  (  J2000  ) " TEXT, "Declination  (  J2000  ) " TEXT)

Name the total number of NGC number for sagittarius and diffuse nebula with declination of 02
SELECT COUNT("NGC number") FROM table_10401 WHERE "Constellation" = 'sagittarius' AND "Object type" = 'diffuse nebula' AND "Declination ( J2000 )" = '°02′'
SELECT COUNT("NGC number") FROM "table_10401" WHERE "Constellation" = 'sagittarius' AND "Declination ( J2000 )" = '°02′' AND "Object type" = 'diffuse nebula'