Using proj to convert EPSG:2263 to WGS84

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I have input data in EPSG:2263 with X and Y coordinates such as:

X,Y987043,206407982441,212359990907,209020(these locations are within NYC).

I need to convert these to WGS84. Using QGIS if I import these coordinates and tell it the input data is in "EPSG:2263, NAD83 / New York Long Island (ftUS)" successfully imports the coordinates and renders them correctly (e.g. if overlaid over a WGS84 map).

It gives me this as the conversion options:

+proj=lcc +lat_1=41.03333333333333 +lat_2=40.66666666666666 +lat_0=40.16666666666666 +lon_0=-74 +x_0=300000.0000000001 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defsHowever, if I try to manually convert a point on the command line, for example:

cs2cs +proj=lcc +lat_1=41.03333333333333 +lat_2=40.66666666666666 +lat_0=40.16666666666666 +lon_0=-74 +x_0=300000.0000000001 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defs -f '%.8f'987043,206407-73.99000712 40.16666623 0.00000000,206407The resulting point is obviously not correct and (if shown on Google Earth) is off the coast of New Jersey.

I'll admit projections and coordinate systems and converting between them does still quite baffle me...

Suggestions for how I should be adjusting those cs2cs options to get a correct conversion?



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