Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_28 ( ngc_number INTEGER, declination___j2000__ VARCHAR, apparent_magnitude VARCHAR )

### Question ###
What's the total number of NGC that has a Declination ( J2000 ) of 15 55 , and an Apparent magnitude greater than 10?

### Accurate SQL ###

SELECT SUM(ngc_number) FROM table_name_28 WHERE declination___j2000__ = "°15′55″" AND apparent_magnitude > 10