When asteroids approach the Earth they're at perigeon. You've heard of perihelion, we need a new word. We're going to coin a word to express the concept of perihelion, but proximity to the Earth (geo), not the sun.
Perigeon
Kepler’s Laws
Kepler's laws don't prove heliocentricity, they prove that the sun is at one focus of elliptical planetary orbits. The Earth is the other focus. Kepler couldn't find the second focus because he was standing on it.