SourceEpochImageVisibility
2200+420
VR422201
1995APR12 2 GHz , 8 GHz 2 GHz , 8 GHz
1997JAN30 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1997MAR31 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1997MAY19 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1997JUL24 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1997SEP08 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1997DEC17 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1998FEB09 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1998APR15 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1998JUN24 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1998AUG10 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1998DEC21 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1999APR15 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1999JUN21 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
1999AUG02 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2000JAN31 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2000JUL06 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2000OCT23 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2001JAN29 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2001MAY09 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2002JAN16 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2003JUL09 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
2008JAN23 2 GHz+ , 8 GHz+ 2 GHz+ , 8 GHz+
A "+" after the frequency indicates VLBA+ observations.