The nearest found maser object is G94.250-5.436 (offset by 35.8" from input coordinates)
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display_aladin("328.1515870","47.2374060","G94.250-5.436","G94.250-5.436","577, BD+463471, AS 477, AS 477, BD463471, BD+463471, BD+46°, 3471, IRAS 21506+4659","0")