Satellite is normally assumed to be at the equator and 64.5E. My reading suggested that during the flight of MH370 it's position varied between 0.8 and 1.5N because of it's little elliptical orbit up there. I have centered my rings at 1.2N as a compromise.
I can't remember now where the position information came from but armed with Steele's ring diameters and a circle generator, you can put them anywhere you like. It's a 10 minute job to generate your own rings.