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 ( spectral_type VARCHAR, constellation VARCHAR )

### Question ###
If the constellation is Gemini, what is the spectral type?

### Accurate SQL ###

SELECT spectral_type FROM table_1820752_1 WHERE constellation = "Gemini"