3. What are ground tracks?

5. COE Determination

6. a e i   ? ? ? ? ? ? COE Determination

7. Non-rotating Earth

8. Rotating Earth

9. COE Determination Semimajor axis Δ longitude ΔNΔN P = ΔN 15º / hr

10. a e i    ? ? ? ? COE Determination ?

11. Eccentricity Circle

12. COE Determination Eccentricity

13. COE Determination Eccentricity Line Symmetry Ellipse

14. COE Determination Eccentricity Line Symmetry Ellipse

15. COE Determination Eccentricity Line Symmetry Ellipse

16. COE Determination Eccentricity Line Symmetry Ellipse

17. COE Determination Eccentricity Line Symmetry Ellipse

18. COE Determination Eccentricity Line Symmetry Ellipse

19. COE Determination Eccentricity Line Symmetry Ellipse

20. COE Determination Eccentricity

21. COE Determination Eccentricity Hinge Symmetry Ellipse

22. COE Determination Hinge Symmetry Eccentricity Ellipse

23. COE Determination Hinge Symmetry Eccentricity Ellipse

24. COE Determination Hinge Symmetry Eccentricity Ellipse

25. COE Determination Hinge Symmetry Eccentricity Ellipse

26. COE Determination Eccentricity Hinge Symmetry Ellipse

27. COE Determination Eccentricity

28. COE Determination Eccentricity Line & Hinge Circle

29. COE Determination Eccentricity Neither Ellipse

30. COE Determination Eccentricity

31. a e i    ? ? ? ? COE Determination  ~

32. Inclination i = highest latitude

33. COE Determination Inclination i = 180º - highest latitude

34. COE Determination Inclination i = highest latitude

35. COE Determination Inclination i = 180º - highest latitude

36. a e i    ? ? ? COE Determination   ~

37. a e i     ? ? COE Determination   ~

38. Argument of Perigee

39. COE Determination 360º per orbit 90º 180º 270º 360º Ascending Node Argument of Perigee

40. Perigee  = 180  Perigee  = 270  Perigee  = 90  Perigee  = 0  Hinge Symmetric Line Symmetric

41. COE Determination Argument of Perigee ω = 180º

42. COE Determination Argument of Perigee ω = 90º

43. COE Determination Argument of Perigee ω = 0º

44. COE Determination Argument of Perigee ω = 270º

45. COE Determination Argument of Perigee Hinge Symmetry ω = 0º or 180º

46. COE Determination Argument of Perigee Line Symmetry ω = 90º or 270º

47. a e i      ? COE Determination   ~ ~

48. True Anomaly

49. COE Determination True Anomaly

50. COE Determination True Anomaly

51. Orbit Examples

52. Molniya

53. Geostationary

54. Geosynchronous

55. e = 0.8  = 180  e = 0.8  = 0  e = 0.0

56. Geosynchronous e = 0 i = 0  e = 0.4  = 180  e = 0.6  = 90 