Angular momentum is a physical quantity that measures the rotational motion of an object around a fixed point or axis. It is calculated by multiplying the object's mass, velocity, and distance from the axis of rotation.
Angular momentum and eccentricity are related through Kepler's Second Law, which states that the line joining a planet to the sun sweeps out equal areas in equal times. This means that as a planet's eccentricity increases, its angular momentum also increases.
Yes, both angular momentum and eccentricity can change over time due to external forces such as gravitational interactions with other objects. In the case of a planet orbiting a star, its eccentricity can change due to the influence of other planets in the system.
The angular momentum of an object affects its orbit by determining the shape and size of the orbit. Objects with higher angular momentum will have larger and more elliptical orbits, while objects with lower angular momentum will have smaller and more circular orbits.
Orbital angular momentum is the measure of an object's rotational motion around a fixed point or axis, while spin angular momentum is the measure of an object's internal rotation. In the case of a planet, its orbital angular momentum is determined by its orbit around the sun, while its spin angular momentum is determined by its rotation on its own axis.