Table: ngc_objects_5001_6000_2
Columns: ngc_number
object_type
constellation
right_ascension_j2000
declination_j2000
apparent_magnitude

Question: What is the name of the constellation that has a NGC number smaller tha 5457?
SQL: SELECT "constellation" FROM ngc_objects_5001_6000_2 WHERE "ngc_number" < 5457

Question: What is the Apparent magnitude of a Declination (J2000) of °39′45″?
SQL: SELECT MIN("apparent_magnitude") FROM ngc_objects_5001_6000_2 WHERE "declination_j2000" = '°39′45″'