Three Laws of Planetary Motion Flashcards
What are the three laws of planetary motion?
Law of ellipsis, law of areas, and law of periods
The planets move around the sun in elliptical orbits while the sun is at one focus.
Law of ellipsis
Law of ellipsis is also called law of?
Orbits
It is the term used when the planet is nearest to the sun?
Perihelion
It is the term used when the planet is farthest to the sun
Aphelion
It is the term used when the planet is nearest to the moon
Perigee
It is the term used when the planet is farthest to the moon
Apogee
It occurs two weeks after december solstice
Perihelion
It occurs two weeks after june solstice
Aphelion
The square of time period of the planet is directly proportional to the cube of the semi major axis of its orbit.
Law of periods
The law of periods is also called the law of?
Harmonies
What is the value of AU or sun - earth distance in meters?
1.496 x 10 ^ 11 meters
It states that the line joining from a planet to the sun sweeps out equal area in equal amount of time.
Law of areas
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When a planet is near the sun, it travels faster and sweeps to longer path.