Orbits and Movement in Space

  • Overview
  • Course Content
  • Requirements & Materials
Overview

Orbits and Movement in Space

Course Description

In this hands-on course, learners will explore the physics of planetary and satellite motion through Kepler’s and Newton’s laws, orbit determination, and real-world orbital forces. Participants will also learn how gravity and orbital dynamics shape satellite behavior and guide effective mission planning. Similar to the way sailing ships of the past were dependent on wind to navigate the oceans, satellites rely on their kinetic energy to move in the gravitational field of Earth. In addition to the relentless pull of gravity, satellites feel other dissipative forces because of Earth's atmosphere and solar radiation pressure. Balancing these forces is essential for satellites to maintain movement on their orbit in space and fulfill their mission requirements.

Course Content

1. Introduction to Planetary Motion and Kepler’s Laws

  • Descriptive formulation of gravity through Kepler’s laws
  • Orbital shapes and characteristics of planetary and satellite orbits
  • Methods for measuring distances to planets
  • Comparison of planetary and Earth‑orbiting satellite motions

2. Gravity as a Central Force

  • Concept and properties of central-force fields
  • Gravitational force formulated by mass and separation
  • Relationship among position, velocity, and acceleration in orbital motion
  • Newton’s unification of terrestrial and celestial gravity

3. Newtonian Mechanics and Energy in Gravitational Systems

  • Application of Newton’s laws to orbital interactions
  • Gravitational potential energy and its dependence on mass
  • Work–energy principles and conservation of energy in orbits
  • Predictive modeling of orbital trajectories using fundamental laws

4. Orbit Determination and Predictive Modeling

  • Use of state vectors (position and velocity) to define spacecraft motion
  • Application of Newton’s equations to derive orbit equations
  • Techniques for predicting future satellite positions
  • Importance of orbit determination in satellite operations

5. Dissipative Forces and Long‑Term Orbital Evolution

  • Influence of Earth’s non‑uniform mass distribution on orbital drift
  • Atmospheric expansion and contraction due to solar activity
  • Atmospheric drag and its impact on satellite kinetic energy
  • Effects of solar radiation pressure as an orbital perturbation

6. Orbital Parameters and Keplerian Elements

  • Definitions and roles of Keplerian orbital elements
  • Inclination, altitude, and orbital period as mission‑shaping factors
  • Ground coverage, revisit time, and operational environment
  • Interpretation of orbital geometry for mission requirements

7. Orbit Types and Applications to Mission Planning

  • Characteristics of equatorial, polar, and Sun‑synchronous orbits (SSO)
  • Geostationary and highly elliptical orbit (GEO and HEO) uses and behaviors
  • Prograde and retrograde orbital motion
  • Matching orbit types to mission objectives and constraints
Requirements & Materials

Prerequisites

RECOMMENDED:

  • Undergraduate-level knowledge of Algebra, Calculus, Physics, and/or Engineering
  • Recommended: Freshman/Sophomore Physics/Calculus-I

Materials

PROVIDED (Student will receive):

  • Lecture notes will be provided.
  • Learners will use custom software to enhance their understanding of course content around orbits, tracking, and observations.

Who Should Attend

This course is designed for individuals who are new to space-related roles or the military. Is is also valuable for those working as analysts or in space operations roles.

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What You Will Learn

  • Keplerian motion — descriptive understanding of planetary and satellite orbits using Kepler’s laws
  • Central‑force dynamics — characterization of gravity as a central force and formulation of gravitational force, potential energy, work, and energy conservation
  • Newtonian prediction — application of Newton’s laws to model orbital motion through position, velocity, acceleration, and state vectors
  • Orbit determination — use of measurements and Newton’s equations to derive precise satellite orbit trajectories
  • Dissipative‑force effects — analysis of atmospheric drag, solar radiation pressure, and Earth’s mass distribution on long‑term orbital evolution
  • Orbital‑element characterization — interpretation and use of Keplerian elements to define orbits and predict orbital behavior
  • Mission‑planning parameters — evaluation of inclination, altitude, period, and orbit type, including equatorial, polar, Sun-synchronous orbit (SSO), geostationary orbit (GEO), highly-elliptical orbit (HEO), prograde/retrograde, for satellite mission design

 

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How You Will Benefit

  • Develop a foundational understanding of planetary and satellite motion using Kepler’s laws, enabling clearer reasoning about orbital behavior that supports data-driven decisions in aerospace and mission planning roles.
  • Apply Newton’s laws and the concept of central forces to accurately characterize gravitational interactions, strengthening analytical capabilities crucial for modeling spacecraft dynamics.
  • Interpret orbital motion through state vectors and orbit‑determination methods, improving the ability to predict satellite trajectories and enhance organizational precision in space operations.
  • Analyze dissipative forces, such as atmospheric drag, mass-distribution variations, and solar radiation pressure, to anticipate long‑term orbital changes and contribute to more reliable mission design and asset management.
  • Evaluate the impact of gravitational potential energy, work, and energy conservation on orbital stability, enabling more effective assessment of satellite performance and mission constraints.
  • Use Keplerian elements and key orbital parameters to classify orbits and plan mission profiles, helping organizations optimize coverage, revisit times, and operational environments.
  • Differentiate among orbit types (equatorial, polar, SSO, GEO, HEO, prograde, and retrograde) to recommend mission‑appropriate configurations that improve organizational efficiency and technical decision-making.
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TRAIN AT YOUR LOCATION

We enable employers to provide specialized, on-location training on their own timetables. Our world-renowned experts can create unique content that meets your employees' specific needs. We also have the ability to deliver courses via web conferencing or on-demand online videos. For 15 or more students, it is more cost-effective for us to come to you.

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