The nearest found maser object is G28.684-0.282 (offset by 22.2" from input coordinates)
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display_aladin("281.1700000","-3.9116670","G28.684-0.282","G28.684-0.282","4772, A028.677-00.277, PN11, BGPS 4016, G 28.687-0.283","0")