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gptkbp:instanceOf
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scientific laws
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gptkbp:alsoKnownAs
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gptkb:Kepler's_laws_of_planetary_motion
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gptkbp:appliesTo
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gptkb:binary_stars
satellites
planets in the Solar System
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gptkbp:field
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gptkb:astronomy
physics
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gptkbp:firstLaw
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The orbit of a planet is an ellipse with the Sun at one of the two foci.
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gptkbp:firstLawYear
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1609
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gptkbp:formedBy
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gptkb:Johannes_Kepler
17th century
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https://www.w3.org/2000/01/rdf-schema#label
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Kepler's laws
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gptkbp:influenced
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Isaac Newton's law of universal gravitation
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gptkbp:influencedBy
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Tycho Brahe's observations
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gptkbp:numberOfFloors
|
3
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gptkbp:precededBy
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gptkb:Copernican_heliocentrism
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gptkbp:publishedIn
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gptkb:Astronomia_Nova
gptkb:Harmonices_Mundi
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gptkbp:secondLaw
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A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.
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gptkbp:secondLawYear
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1609
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gptkbp:thirdLaw
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The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.
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gptkbp:thirdLawYear
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1619
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gptkbp:bfsParent
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gptkb:classical_mechanics
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gptkbp:bfsLayer
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4
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