Hipparchus was the greatest astronomer of antiquity. He was the first to compile a catalog of stars, the first to devise a cooordinate system for the sky, the first to use an armillary astrolabe to measure celestial positions, and perhaps the first to discover a long-term wobble in Earth's axis that we now call precession of the equinoxes.
Hipparchus also developed theories for the motions of the Sun and Moon, and measured the eccentricity of the earth's obit (fairly accurately, too!)
The Hipparchan model for orbits was based on an eccentric circle, with the planet (Sun or Moon) moving along the orbit in uniform circular motion, and the earth offset from the center of the circle.
See Also
apsidal
04 - Molecular Radiation
9.24 - Elliptical Enharmonic Orbit
antagonistic molecular bombardment
Apsidal
atomic intermolecular and molecular density
compound molecular aggregation
cycloid motion
cycloid motive impulse
cycloid
cycloid-space-curve motion
cycloid-space-curve system
cycloid-space-curve
cycloid-space-curve-motion
cycloid-spiral-space-curve
differential molecular volume
dissipation of energy in molecular aggregation
Earth Wobble
earth
ellipse
ellipsoid
elliptical orbit
Figure 1.9 - Keelys Molecular Morphology
Figure 10.05 - Three Orthogonal Planes where Six Gyroscopic Vortices Converge
Figure 3.21 - Vortex or Gyroscopic Motions as Conflicts or Antagonisms between Light and Dark
Figure 3.22 - Vortex or Gyroscopic Motions as Conflicts or Antagonisms between Light and Dark Zones
Figure 3.23 - Vortex or Gyroscopic Motions as Conflicts or Antagonisms between Light and Dark Zones
Figure 3.28 - Compression and Expansion Forces in Gyroscopic Motions
Figure 3.30 - Discrete Degrees or Steps in Gyroscopic Compression Motion
Figure 4.5 - Compound Gyroscopic or Vortex Motions
Figure 5.3 - Vortex or Gyroscopic Motion is Natural and occurs ubiquitously
Figure 5.4 - Vortex and Gyroscopic Motion on One Plane then on three forming Sphere
first order of intensified molecular vibration
FORCES DERIVED FROM INTRA-ATOMIC ENERGY - MOLECULAR FORCES, ELECTRICITY, SOLAR HEAT, ETC.
Fraunhofer Lines
gyroscope
gyroscopic principle
Gyroscopic Reactionless Drive
Hipparchus
inner molecular excitation
inter-sympathetic vibratory molecular link
intermolecular field
InterMolecular
Law of Molecular Synthesis and Combination - Organic
Levitating Gyroscopes
looping
molecular action
MOLECULAR AGGREGATES
molecular aggregation
Molecular Arch
molecular bombardment
molecular condition
molecular differentiation
molecular disintegration
MOLECULAR DISSOCIATION - Snell
Molecular Dissociation
molecular disturbance
molecular fermentation process
molecular focalization and redistribution
molecular friction
molecular interaction
molecular mass
molecular motion
molecular movement
MOLECULAR OSCILLATING FREQUENCY
molecular oscillation
Molecular percussion
molecular processes
molecular range of motion
molecular separation
molecular structure
molecular sympathetic transmission
molecular uniformity
molecular vibration
molecular volume
molecular
motion
New Concept - Wobbling Gyroscopes Seek Balance
New Concept - XXXI - Introducing the Gyroscope into the Octave Wave
New Concept - XXXII - The Nucleus is the Hub of the Gyroscope Wheel
New Concept - XXXVI - Wobbling Gyroscopes Seek Balance
orbit
planet
plus-molecular
Polarity Controlled Electric Gyroscope
range of molecular motion
spin
spiral
spiral-ellipse
Sympathetic Chord Molecular
system of cycloid-space-curves
THE MOLECULAR WORLD
The Practical Application of Cycloid-Space-Curve-Motion arising from Processes of Cold Oxidation
theory of elliptic functions
Triple Triplet Flows
Triple Triplet
uniform molecular link
vortex