Table schema:
CREATE TABLE table_name_58 (right_ascension___j2000__ VARCHAR, object_type VARCHAR, ngc_number VARCHAR, constellation VARCHAR)

Question: what is the right ascension (j2000) with the ngc number less than 3384, the constellation is hydra and the object type is spiral galaxy?
SQL: SELECT right_ascension___j2000__ FROM table_name_58 WHERE ngc_number < 3384 AND constellation = "hydra" AND object_type = "spiral galaxy"