The nearest found maser object is G346.853-0.186 (offset by 2.8" from input coordinates)
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display_aladin("257.7183230","-39.9808330","G346.853-0.186","G346.853-0.186","G346.853-0.186, G346.853-0.187, OH346.854-00.186, OH346.86-0.18","0")