Kepler`s Second Law (Law of Areas) Is Nothing but a Statement of

The orbit of a planet around the sun (or a satellite around a planet) is not a perfect circle. It is an ellipse – a “flattened” circle. The sun (or the center of the planet) occupies a focus of the ellipse. A focus is one of two internal points that help determine the shape of an ellipse. The distance between a focus and any point on the ellipse, and then back to the second focus, is always the same. Kepler`s surface law is nothing more than the conservation of angular momentum. Kepler`s second law (law of surfaces) is nothing more than a statement of Kepler`s second law, which states that a planet moves in its ellipse so that the line between it and the sun placed in a focus sweeps equal areas at equal times. His astronomy thus solved the otherwise difficult problem of…n Kepler`s laws show the effects of gravity on orbits. They apply to any object in orbit around another: planets orbiting the sun, moons orbiting a planet, spacecraft orbiting the Earth. Eccentricity is the measure of the “roundness” of an orbit.

A perfectly circular orbit has zero eccentricity; Higher numbers indicate elliptical orbits. Neptune, Venus and Earth are the planets of our solar system along with the Lea. more. Johannes Kepler was the first to use the term “satellite” to describe orbiting bodies in his 1610 pamphlet Narratio de Observatis a se quatuor Iouis satellitibus erronibus (Tale of the four moons observed from Jupiter). He derived the term from the Latin word satelles, meaning companion, because satellites accompanied their primordial planet on their journey through the sky. A planet farther from the sun not only has a longer orbit than a closer planet, but also moves more slowly because the sun`s gravitational pull is weaker. The larger a planet`s orbit, the longer it takes for the planet to complete it. The orbital speed of a planet changes depending on its distance from the sun. The closer a planet is to the Sun, the stronger the Sun`s gravitational pull on it and the faster the planet moves.

The farther it is from the Sun, the weaker the Sun`s gravitational pull and the slower it moves in its orbit. (2) A ray vector connecting any planet to the Sun scans equal areas in the same amount of time. (3) The squares of the sidereal periods (rotation) of the planets are directly proportional to the cubes of their average distances from the Sun. Knowledge…n How many man-made objects are currently orbiting the Earth? 8,000: The U.S. Space Surveillance Network (USSN) has been tracking objects in Earth orbit since 1957, when the Soviets launched Sputnik I. The SSN currently tracks more than 8,000 artificial objects in orbit around the Earth. The SSN tracks objects with a diameter of 10 centimeters or more. Those now orbiting Earth range from satellites weighing several tons to used rocket body parts weighing just 10 pounds. Fewer than 600 are operational satellites, the rest are waste. Free LVE COURSES, PDF, questions answered, PYQ, simulated tests, practice tests and test series! Our editors will review what you have submitted and decide if the article needs to be revised.