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In graph Frontier
AstronomyEstablished

Kepler's laws of planetary motion

In astronomy, Kepler's laws of planetary motion give good approximations for the orbits of planets around the Sun.

Kepler's laws of planetary motionOrbitCelestial mechanicsGravityPlanetNewton's law of universal gravitationEclipsePhase of the moonWeight

At a glance

Type
patterns
Disciplines 1
Astronomy
Mental models 0
—
Role in the graph
Leaf concept

Key signals

Cross-disciplinary reach
Disciplines
1
  • Astronomy
Evidence & development

Structural role & consequence

Interpreted from the current atlas graph — what the connections mean, not just how many there are.

  • Currently dark in the atlas: 1 of 1 of its relations lack claim-level evidence.

    atlas representation · Describes the current Thinking OS representation, not the state of the world.

  • Structural neighbourhood: 1 → 7 → 23 concepts reachable within 3 hops.

    structural · Structural reach — being reachable is not the same as being understood.

  • All 1 of its relationships stay within its own discipline — a field-specific concept in the current atlas.

    structural · Structural graph analysis — not a claim of importance, causation or history.

0%

cross-field
1 within-field, 0 cross-field

0 of 1 relations carry evidence · concept has a verified source

Strengths & constraints

Constraints

  • Evidence coverage currently thin in the atlas — few of its relationships carry claim-level evidence. atlas representation

Conditions

  • Read structurally — most of its relationships carry no external evidence yet, so claims here are graph-derived. structural

Seen through each discipline

How this concept sits in each of its fields — derived from its real connections in the graph, not asserted.

Astronomy

Through this lens it connects to Orbit.

Kepler's laws of planetary motion through the Astronomy lens →

Formula

Kepler's third law

The square of an orbital period is proportional to the cube of the semi-major axis.

  • T — orbital period
  • a — semi-major axis
  • M — mass of the central body

Source: University Physics (OpenStax)

Key dates

  1. 1609FormalizationKepler publishes the first two laws of planetary motion in Astronomia nova.
  2. 1619FormalizationKepler publishes the third (harmonic) law.

Concepts that look related but are not yet connected here — candidates for a connection to reason about, not established links.

The scientific picture
  • Connects 1 other ideas across 1 discipline.
  • Most of its connections are of the “Explains & models” kind.

Derived from the graph’s real structure — observations, not a score.

Sources