Perihelion and aphelion

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Perihelion and aphelion

  1. 1. Celestial Navigation I<br />Capt. Bernabe Lim<br />INSTRUCTOR<br />
  2. 2. Perihelion and Aphelion<br />
  3. 3. PERIHELION<br /><ul><li>closest point of Earth to sun
  4. 4. distance about 1.5 M miles less than the mean distance
  5. 5. occurs on early January</li></li></ul><li>APHELION<br /><ul><li>Farthest point to sun
  6. 6. about 1.5 M miles greater than the mean distance
  7. 7. occurs on early July</li></li></ul><li>
  8. 8. MOTION OF BODIES OF THE SOLAR SYSTEM<br />Two principal motions<br /><ul><li>Rotation
  9. 9. Revolution</li></ul>Video <br />
  10. 10.
  11. 11.
  12. 12. ROTATION<br />
  13. 13.
  14. 14. ROTATION<br />Rotation of Earth around axis<br />Rotates to East<br />Turns counter-clockwise<br />Daytime and night time<br />24 hours or 1 day<br />
  15. 15. REVOLUTION<br />
  16. 16. <ul><li>Motion of body in elliptical orbit
  17. 17. 365.25 days or a year</li></li></ul><li>Thank you for listening!<br />

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