Question: What is the name of the constellation that has a NGC number smaller tha 5457?
SQL: SELECT "Constellation" FROM "2-11051845-5" WHERE "NGC number" < 5457.0;

Question: What is the Apparent magnitude of a Declination (J2000) of °39′45″?
SQL: SELECT MIN("Apparent magnitude") FROM "2-11051845-5" WHERE "Declination ( J2000 )" = '°39′45″';