CREATE TABLE table_name_59 (right_ascension___j2000__ VARCHAR, object_type VARCHAR, ngc_number VARCHAR)

Tell me the right ascension for open cluster and NGC number more than 2547
SELECT right_ascension___j2000__ FROM table_name_59 WHERE object_type = "open cluster" AND ngc_number > 2547
SELECT "right_ascension___j2000__" FROM "table_name_59" WHERE "ngc_number" > 2547 AND "object_type" = "open cluster"