05, Benson 05, Wang et al. These points are the points where gravitational pull from both if the celestial bodies is equal.

Few satellite orbits are highly radial or circular Most satellite orbits plunge deeply into their host halo see also: Vitvitska et al.

The SOHO spacecraft is in a halo orbit around the Sun–Earth L1 point, the point between the Earth and the Sun where the balance of the (larger) Sun's gravity and the (smaller) Earth's gravity is equal to the centripetal force needed for an object to have the same orbital period in its orbit around the Sun as the Earth, with the result that the object will stay in that relative position. A halo orbit is a periodic, three-dimensional orbit near one of the L 1, L 2 or L 3 Lagrange points in the three-body problem of orbital mechanics.Although a Lagrange point is just a point in empty space, its peculiar characteristic is that it can be orbited. 05, Khochfar & Burkert 06

02, Zentner et al.

There are sets of lagrange points(5 points) for systems like Earth-moon or Earth-sun.