Table schema:
CREATE TABLE table_name_24 (constellation VARCHAR, right_ascension___j2000__ VARCHAR, object_type VARCHAR, ngc_number VARCHAR)

Question: what is the constellation when the object type is spiral galaxy, the ngc number is less than 3593 and the right ascension (j2000) is 11h05m48.9s?
SQL: SELECT constellation FROM table_name_24 WHERE object_type = "spiral galaxy" AND ngc_number < 3593 AND right_ascension___j2000__ = "11h05m48.9s"