SourceEpochImageVisibility
1502+106
1994JUL08 2 GHz , 8 GHz 2 GHz , 8 GHz
1998FEB09 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2004FEB15 2 GHz , 8 GHz 2 GHz , 8 GHz
2005AUG26 8 GHz 8 GHz
2010JUN23 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.