Do you want to search around a position ... ?
(If you want to search on parameters other than object name or coordinates, select "Detailed Mission/Catalog Search".)
and/or
e.g. Cyg X-1 or 12 00 00, 4 12 6 or Cyg X-2; 12.235, 15.345 (Note use of semi-colons (;) to separate multiple object names or coordinate pairs) File should contain objects and/or coordinate pairs one per line or separated by semi-colons.
Default uses the optimum radius for each catalog searched.
... and/or search by date?
 YYYY-MM-DD hh:mm:ss or MJD: DDDDD.ddd
The time portion of the date is optional. Separate multiple dates/ranges with semicolons (;).
Range operator is '..'. (e.g. 1992-12-31; 48980.5; 1995-01-15 12:00:00; 1997-03-20 .. 2000-10-18)