The nearest found maser object is G20.260-0.703 (offset by 0.6" from input coordinates)
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display_aladin("277.6410988","-11.5844948","G20.260-0.703","G20.260-0.703","18277-1137, G20.260-0.703-1612A, G20.260-0.703-1612B","0")