SourceEpochImageVisibility
0010+405
1995APR12 2 GHz , 8 GHz 2 GHz , 8 GHz
1998APR15 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2008SEP03 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2009JAN21 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.