That's why I said "a bit" :-D But I didn't intepret question correctly.
In this case you need set-up event listener and then you can catch place event.
Look for "notifiers" in documentation and "arguments". Everthing in script listener log is also in arguments as action descriptor. And you can extract data from this descriptor.
Anyway this value is not stored anywhere in document by default. If you want this value after PS restart you should store it somewhere. Maybe in metatags.
From script listener:
var idPlc = charIDToTypeID( "Plc " );
var desc3664 = new ActionDescriptor();
var idIdnt = charIDToTypeID( "Idnt" );
desc3664.putInteger( idIdnt, 4 );
var idnull = charIDToTypeID( "null" );
desc3664.putPath( idnull, new File( "D:\\Photos\\my\\path\\IMG_4419.JPG" ) );
var idFTcs = charIDToTypeID( "FTcs" );
var idQCSt = charIDToTypeID( "QCSt" );
var idQcsa = charIDToTypeID( "Qcsa" );
desc3664.putEnumerated( idFTcs, idQCSt, idQcsa );
var idOfst = charIDToTypeID( "Ofst" );
var desc3665 = new ActionDescriptor();
var idHrzn = charIDToTypeID( "Hrzn" );
var idPxl = charIDToTypeID( "#Pxl" );
desc3665.putUnitDouble( idHrzn, idPxl, 0.000000 );
var idVrtc = charIDToTypeID( "Vrtc" );
var idPxl = charIDToTypeID( "#Pxl" );
desc3665.putUnitDouble( idVrtc, idPxl, 0.000000 );
var idOfst = charIDToTypeID( "Ofst" );
desc3664.putObject( idOfst, idOfst, desc3665 );
executeAction( idPlc, desc3664, DialogModes.NO );