The nearest found maser object is G84.442+10.230 (offset by 1.8" from input coordinates)
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display_aladin("300.3647850","50.0425770","G84.442+10.230","G84.442+10.230","496, IRAS20000+4954 npl, *Z Cyg, Z Cyg, Z Cyg, Z CYG","0")