The nearest found maser object is G11.992-0.272 (offset by 1.8" from input coordinates)
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display_aladin("273.2133245","-18.6774860","G11.992-0.272","G11.992-0.272","011.992-0.272, 11.99-0.27, 11.992-0.272, 18099-1841, G011.991-0.272, G11.9916-0.2723, 11.992-0.272, 2603, G11.99-0.27, G11.991-0.272, N66, G11.992-00.272","0")