Our Wacky Universe

Our universe is filled with strange and wacky things. This blog hopes to point out all the unique things that make the cosmos interesting and fun to learn about.

Eccentricity

where:
  • a is the semi-major axis, the longer of the axes
  • b is the semi-minor axis
  • f is the distance from the center of the ellipse to one of the foci
  • e is the eccentricity
For a circle, a=b, f=0, and e=0
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Definitions

  • Angular Velocity
  • Apparent Diamter
  • Astronomical Unit
  • Direct Motion vs. Retrograde Motion
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  • Ecliptic
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