The nearest found maser object is G340.987+0.831 (offset by 5.9" from input coordinates)
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display_aladin("251.7491730","-43.9555985","G340.987+0.831","G340.987+0.831","16434-4351, G340.987+0.831, IRAS 16434-4351, OH340.987+00.831","0")