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_206217_2 ( epoch__utc_ VARCHAR, periselene__km_ VARCHAR )

### Question ###
What is every entry for epoch if periselene is 2,291.250?

### Accurate SQL ###

SELECT epoch__utc_ FROM table_206217_2 WHERE periselene__km_ = "2,291.250"