The nearest found maser object is G11.991-0.272 (offset by 1.5" from input coordinates)
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display_aladin("273.2133330","-18.6776665","G11.991-0.272","G11.991-0.272","011.992-0.272, 11.99-0.27, 11.992-0.272, 18099-1841, G11.9916-0.2723, 11.992-0.272, 2603, G11.99-0.27, G11.991-0.272, N66","0")