When you're dealing with the motion of objects close to the Earth, a geocentric reference frame is entirely appropriate. However, when examining the motion of

When you're dealing with the motion of objects close to the Earth, a geocentric reference frame is entirely appropriate. However, when examining the motion of the planets a heliocentric reference frame is "more correct" in that the motion of the planets in that reference frame suggests a deeper truth: that the primary influence on the motion of the planets is somehow the Sun.