I wrote a paper on this, it is secured, so you can see it by registering by pressing the link
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Planets travel slowest at their aphelion – the point in their orbit farthest from the sun. This is when they are moving at their slowest speed due to the effect of gravity.
The Earth travels around the sun in an orbit that is in an elliptical (oval) shape. The sun is not in the center of the oval, but nearer to one end. The point in Earth's orbit when it is closest to the sun is called the perihelion, and that is also the point when the Earth is traveling fastest in its orbit. Where it is furthest from the sun (aphelion) is where it is traveling slowest.
Any object in a closed orbit moves slowest when it's at the point farthest away from the central body.If the central body happens to be the sun, then the point in the orbit that's farthest from the sun iscalled "aphelion". The earth passes aphelion on July 3 or 4.
Neptune is the furthest planet from the sun, taking the longest time to complete one orbit, 164.79 years in total. Its distance means that is has further to go to complete one orbit, while it also means that the planet travels the slowest. The further a planet is from the gravitational pull of the sun, the slower it will move tangentially.
Mercury has the slowest revolution around the sun, taking about 88 Earth days to complete one orbit.
Pre-Galileo, no planets revolve around earth
Earth's orbital velocity is slowest on July 5 because that is when Earth is at aphelion, its farthest point from the Sun in its elliptical orbit. At this point, the gravitational pull from the Sun is weaker, causing Earth to move more slowly in its orbit.
The question is badly formed.When the Earth is at "perihelion", closest to the Sun in its elliptical orbit, it is moving fastest.When the Earth is at aphelion, farthest from the Sun, it it moving at its slowest.
Curiously, the nearer the planet is to the Sun the faster it orbits. Thus Mercury orbits the fastest, whereas Neptune is the slowest.
Orbital speed is determined by the mass of the body and the distance from the sun. Given its extreme distance, Pluto has the slowest orbit. However, Pluto is no longer considered a planet, but instead a planetoid. Therefore Neptune now has the slowest orbit.
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).
Yes, it does.