12. Non-Synchronous & Satellite Orbit Categories by Altitude

Non-Synchronous Satellites

They are orbital satellites that rotate around the Earth in an elliptical pattern or circular pattern but not In sync with the Earth's 24-hour rotation.

CIRCULAR ORBIT

In a ____________, the speed

or rotation Is constant.

elllptlcal orbit,

In an _________, the speed depends on the height the satellite Is above the Earth. The speed Is greater when II ls closer to the Earth.

counter clockwise

The Earth's rotation is always ___________

ELLIPTICAL ORBIT

APOGEE

____________ is the point In an orbit that is located farthest from the Earth.

PERIGEE

is the point In an orbit that is located closest to the Earth.

MAJOR AXIS

line joining the perigee and apogee

through the center of the Earth.

MINOR AXIS

is the line perpendicular to the major axis and halfway between the perigee and apogee

Prograde or Posigrade Orbit,

when the satellite is orbiting in the same direction as Earth's rotation (counterclockwise) at an angular velocity greater than the earth.

Retrograde Satellite Orbit

when the satellite is orbiting in the opposite direction or even in the same direction of Earth's Rotation

Retrograde Satellite Motion

• The planet is initially moving eastward relative to the background stars

• The planet slows down, stops and begins to moving westward relative to the background stars

• The planet now slows down, stops and begins to moving eastward again

Retrograde Orbit Motion

• Earth passes a slower moving outer planet that makes the planet appear to be moving backwards relative to the background stars.

• positions of the stars do not change

• planets move In the sky relative to the pattern of background stars

• Is an

  apparent motion

wanderer

planets which means ________

Non-Synchronous Retrograde Satellites

• causing the position of the satellite to constantly change

• It also requires expensive

  tracking equipment at the

  Earth station