Lagrange point - Wikipedia
https://en.wikipedia.org/wiki/Lagrange_pointThe five Lagrange points are labeled and defined as follows: The L1 point lies on the line defined between the two large masses M1 and M2. It is the point where the gravitational attraction of M2 and that of M1 combine to produce an equilibrium. An object that orbits the Sun more closely than Earthwould normally have a shorter orbital period than Earth, but that ignores the ef…