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_69 ( orbital_period VARCHAR, center_to_center_distance VARCHAR )

### Question ###
center-to-center distance of 6,900 to 46,300 km involves which orbital period?

### Accurate SQL ###

SELECT orbital_period FROM table_name_69 WHERE center_to_center_distance = "6,900 to 46,300 km"