The nearest found maser object is G21.386-0.253 (offset by 2.3" from input coordinates)
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display_aladin("277.7661000","-10.3786110","G21.386-0.253","G21.386-0.253","18282-1024, G021.3853-00.2537, G21.3872-0.2532, BGPS2784, G021.3853-00.2537","0")