SourceEpochImageVisibility
1055+018
1997JAN10 2 GHz , 8 GHz 2 GHz , 8 GHz
1998AUG10 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2001JAN29 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2004FEB15 2 GHz , 8 GHz 2 GHz , 8 GHz
2008MAY14 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.