MAG FIELD DEFORMATION. “Typical solar wind conditions give a standoff distance of the magnetopause at about 10 RE (Earth radius = 6370 km) upstream of the Earth, but under strong solar wind driving the magnetopause can be pushed well inside the geostationary orbit (at 6.6 RE where a satellite orbiting around the Earth has a 24-hour rotation period and thus remains at a constant longitude above the Earth).”
https://link.springer.com/article/10.12942/lrsp-2007-1