No way can the S-500 track out to 1000 KMs!
According to the Russian web site:
http://www.rg.ru/2014/07/07/s-500-site.html
Quote:
“The S-500 is supposed to be equipped with missiles designed to destroy aircraft, helicopters and cruise missiles within a radius of up to 400 kilometers, as well as powerful anti-missiles with a range of 600 kilometers.”
There is no certainty as to the range but numerous Mil sites say UP TO 1000km. So you run a test and get back if you survive.
Russians build the best jammers and radars - so you take your chances.
And according to the Russian they invented the airplane - other data comes from others observing the actual working 500 capabilities and reading the manufacture’s specs.