The nearest found maser object is G20.635-0.482 (offset by 1.7" from input coordinates)
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display_aladin("277.6178960","-11.1501790","G20.635-0.482","G20.635-0.482","G20.634-0.482-1612A, G20.634-0.482-1612B, G20.635-0.482-1612A, G20.635-0.482-1612B, OH020.634-00.482, G20.64-0.48","0")