Absolute sort

SELECT * FROM gallery2 WHERE topic_id="184482" UNION SELECT * FROM gallery2 WHERE topic_id="1580833" UNION SELECT * FROM gallery2 WHERE topic_id="1411851" UNION SELECT * FROM gallery2 WHERE topic_id="1258040" UNION SELECT * FROM gallery2 WHERE topic_id="351818" UNION SELECT * FROM gallery2 WHERE topic_id="268722" UNION SELECT * FROM gallery2 WHERE topic_id="305548" UNION SELECT * FROM gallery2 WHERE topic_id="1210755" UNION SELECT * FROM gallery2 WHERE topic_id="237519" UNION SELECT * FROM gallery2 WHERE topic_id="1626063" UNION SELECT * FROM gallery2 WHERE topic_id="838167" UNION SELECT * FROM gallery2 WHERE topic_id="672304" UNION SELECT * FROM gallery2 WHERE topic_id="689769" UNION SELECT * FROM gallery2 WHERE topic_id="297253" UNION SELECT * FROM gallery2 WHERE topic_id="389455" UNION SELECT * FROM gallery2 WHERE topic_id="818768"