1. This is the complete gravitational definition of mean motion in a two-body system. 2. The value of mean motion depends on the circumstances of the particular gravitating system. 3. It also may mean motion sensors, fence sensors, video cameras, or additional razor wire. 4. The semi-major axis is known if the mean motion and the gravitational mass are known. 5. The instrument is engraved with tables showing the mean motions of each of the four moons. 6. The slowly-varying wavetrain without mean motion in a linear dispersive system is described as: 7. When allowing for varying aspect angles and changes in mean motion , this result is consistent with past studies. 8. This region contains the 2 : 1 and 5 : 2 mean motion resonances with HD 69830 d. 9. The orbit of 53 Kalypso places it in a mean motion resonance with the planets Jupiter and Saturn. 10. The nearly 1 : 3 ratio between 55 Cancri b and c is apparently a mean motion resonance.