The reference data for 1/1/2000 match in AstroElite program and Google Earth to the second of arc, but I couldn't decipher how to set a year in Google Earth.

Truly to say, I don't understand, how you get from Google Earth the star coordinates on specific date, for example for Capella.
Do you type in Capella in search filed and then drop a pin onto the map?

I can't believe that mumbo-jumbo are valid latitude and longitude. If yes, for what date they are calculated? What negative longitude means?