CREATE TABLE table_206217_2 (period__h_ VARCHAR2, eccentricity VARCHAR2)

What is every value of period when eccentricity is 0.583085?
SELECT period__h_ FROM table_206217_2 WHERE eccentricity = "0.583085"
SELECT "period__h_" FROM "table_206217_2" WHERE "0.583085" = "eccentricity"