Table schema:
CREATE TABLE table_name_55 (right_ascension___j2000__ VARCHAR, declination___j2000__ VARCHAR, ngc_number VARCHAR, constellation VARCHAR)

Question: What is the right ascension (J2000) with a Declination (J2000) of °12′43″, is a constellation of dorado, and has an NGC number larger than 2068?
SQL: SELECT right_ascension___j2000__ FROM table_name_55 WHERE ngc_number > 2068 AND constellation = "dorado" AND declination___j2000__ = "°12′43″"