The gaia satellite data release 2 measured the parallaxes of stars to an accuracy of better than 20 mas (a milliarcsecond, mas, is a thousandth of an arcsecond, which is on 3600th of a degree). to what distance, in parsecs, can we measure the largest parallax error stars with a distance error of better than 10%? you can use the general equation for error: σy=|dy/dx|σx, where σx is the measured error and σy is the error in the calculated value.