SourceEpochImageVisibility
2150+173
1995OCT12 2 GHz , 8 GHz 2 GHz , 8 GHz
1998FEB09 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2005AUG26 8 GHz 8 GHz
A "+" after the frequency indicates VLBA+ observations.