The planets move intheir ellipticalorbits becauseof the gravitation of the Sun combined withthe inertial velocity of the planets(tangentialto their orbital paths). Mathematics shows the resulting orbits must be ellipses. (Some of the ellipses are in factalmost circles.)
The path that planets take around the sun is called it's orbit. The gravitation pull of the sun keeps each planet in it's orbit. Each planets orbit varies in the time it takes to make one trip around the sun.
The speed of a satellite changes in an elliptical orbit because the satellite moves faster when it is closer to the central body due to gravitational acceleration, and slower when it is farther away. This change in speed is necessary to balance the varying gravitational force experienced by the satellite at different points in its orbit.
The gravitational pull exerted by the Sun, which acts as the central force keeping planets in orbit, causes them to move along elliptical paths. The conservation of angular momentum ensures that planets travel in elliptical orbits, with their speed varying at different points along the orbit to maintain this balance.
When it is farthest from the Sun. This point is known as aphelion. *Aphelion = Furthest point from the Sun.
If a satellite is in an elliptical orbit around the Earth, the Earth will be at one of the focii. The speed of the satellite will then constantly be changing. It will move the fastest when it is nearest to the Earth (perigee) and slowest when it is furthest away (apogee).
A satellite in a closed orbit has the greatest speed when it's closest to the planet, and the lowest speed when it's farthest from the planet.
I'll assume you mean: "... as opposed to a circular orbit". That is caused by the fact that for a circular orbit, a planet needs a VERY PRECISE SPEED. Change the speed slightly (at a particular point in the orbit), and the orbit immediately becomes elliptical.
in the orbit of a planet there is a point called perihelion which is closest point to the sun and aphelion which is furthest from the sun . Moment of a planet in it's elliptical orbit reaches it's maximum in perihelion
The path that planets take around the sun is called it's orbit. The gravitation pull of the sun keeps each planet in it's orbit. Each planets orbit varies in the time it takes to make one trip around the sun.
Kepler's Second Law: The planet moves faster when it is closer to the Sun.
The speed of a satellite changes in an elliptical orbit because the satellite moves faster when it is closer to the central body due to gravitational acceleration, and slower when it is farther away. This change in speed is necessary to balance the varying gravitational force experienced by the satellite at different points in its orbit.
The gravitational pull exerted by the Sun, which acts as the central force keeping planets in orbit, causes them to move along elliptical paths. The conservation of angular momentum ensures that planets travel in elliptical orbits, with their speed varying at different points along the orbit to maintain this balance.
When it is farthest from the Sun. This point is known as aphelion. *Aphelion = Furthest point from the Sun.
A satellite in an elliptical orbit gains speed when it moves closer to the body it is orbiting due to the conservation of angular momentum. This increase in speed occurs as the gravitational force from the body pulls the satellite inwards, causing it to accelerate.
If a satellite is in an elliptical orbit around the Earth, the Earth will be at one of the focii. The speed of the satellite will then constantly be changing. It will move the fastest when it is nearest to the Earth (perigee) and slowest when it is furthest away (apogee).
All orbits are elliptical There speed is constant (slowing with time and external gravity effects) tend to vary by a law of proportions of segments of the ellipse. It can be broken down into elliptical pie slices with the same areas. Newton describes it very well.
Orbital velocity refers to the speed at which a planet travels in its orbit.