Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_65 (diameter__km_ VARCHAR, longitude VARCHAR)
### Question:
How long is the diameter that has a longitude of 8.0e?
### Answer:
SELECT diameter__km_ FROM table_name_65 WHERE longitude = "8.0e"