Ncert Exercises & Solutions

Both the earth and the moon are subject to gravitational force of the sun. As observed from the sun, the orbit of the moon:

1.	will be elliptical.
2.	will not be strictly elliptical because the total gravitational force on it is not central.
3.	is not elliptical but will necessarily be a closed curve.
4.	deviates considerably from being elliptical due to the influence of planets other than the earth.