UGC 9405(也稱為PGC 52142)是在大熊座的一個黯淡的矮不規則星系。它與地球的距離大約是2,050萬光年,或是630萬秒差距[3]。它被列為M101星系群的成員,這個星系群包含圍繞最大的風車星系(M101)運行的幾個星系[5]。然而,由於它與風車星系相距甚遠,其成員身份尚待確定[3]
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