Editing Lagrange point (section)

==={{L3|nolink=yes}} point===
The {{L3|nolink=yes}} point lies on the line defined by the two large masses, beyond the larger of the two. Within the Sun–Earth system, the {{L3|nolink=yes}} point exists on the opposite side of the Sun, a little outside Earth's orbit and slightly farther from the center of the Sun than Earth is. This placement occurs because the Sun is also affected by Earth's gravity and so orbits around the two bodies' [[Barycentric coordinates (astronomy)|barycenter]], which is well inside the body of the Sun. An object at Earth's distance from the Sun would have an orbital period of one year if only the Sun's gravity is considered. But an object on the opposite side of the Sun from Earth and directly in line with both "feels" Earth's gravity adding slightly to the Sun's and therefore must orbit a little farther from the barycenter of Earth and Sun in order to have the same 1-year period. It is at the {{L3|nolink=yes}} point that the combined pull of Earth and Sun causes the object to orbit with the same period as Earth, in effect orbiting an Earth+Sun mass with the Earth-Sun barycenter at one focus of its orbit.