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_1820752_1 (distance___ly__ VARCHAR, spectral_type VARCHAR)

### Question ###
If the spectral type is g1v, what is the total distance amount?

### Accurate SQL ###

SELECT COUNT(distance___ly__) FROM table_1820752_1 WHERE spectral_type = "G1V"