Tiny but equally tight

SELECT * FROM gallery2 WHERE topic_id="550886" UNION SELECT * FROM gallery2 WHERE topic_id="1405151" UNION SELECT * FROM gallery2 WHERE topic_id="1341835" UNION SELECT * FROM gallery2 WHERE topic_id="582298" UNION SELECT * FROM gallery2 WHERE topic_id="1163021" UNION SELECT * FROM gallery2 WHERE topic_id="558660" UNION SELECT * FROM gallery2 WHERE topic_id="1473778" UNION SELECT * FROM gallery2 WHERE topic_id="562452" UNION SELECT * FROM gallery2 WHERE topic_id="1140066" UNION SELECT * FROM gallery2 WHERE topic_id="1152077" UNION SELECT * FROM gallery2 WHERE topic_id="1545728" UNION SELECT * FROM gallery2 WHERE topic_id="944794" UNION SELECT * FROM gallery2 WHERE topic_id="1011844" UNION SELECT * FROM gallery2 WHERE topic_id="256666" UNION SELECT * FROM gallery2 WHERE topic_id="81753" UNION SELECT * FROM gallery2 WHERE topic_id="759203"