---
title: Orbital Mechanics
description: Orbital mechanics, or astrodynamics, is the study of the motion of spacecraft under the influence of gravity. You will understand how to calculate trajectories, plan orbital maneuvers, and design launch and interplanetary missions.
category: engineering
subcategory: aerospace-engineering
difficulty: beginner, intermediate, advanced
url: /subject/orbital-mechanics
---

# Orbital Mechanics

Orbital mechanics, or astrodynamics, is the study of the motion of spacecraft under the influence of gravity. You will understand how to calculate trajectories, plan orbital maneuvers, and design launch and interplanetary missions.

## Available Resources

2 Books • 1 Courses • 6 Websites

## Websites

### 1. Orbital Mechanics for Everybody

TEASER interactive tutorials

**Difficulty:** Beginner | **Price:** Free

**Link:** https://orbital-mechanics.space/

### 2. Celestrak

CelesTrak, run by T.S. Kelso, publishes current two-line element sets and GP orbital data for tracked satellites, plus orbit visualization tools and technical columns. Use it to obtain real orbital elements and practice propagating and interpreting actual satellite orbits.

**Difficulty:** Beginner | **Price:** Free

**Link:** https://celestrak.org/

**Tags:** two-line-elements, satellite-tracking, orbit-determination, orbital-elements, space-situational-awareness

### 3. NASA Basics of Space Flight

Free NASA chapter on orbital mechanics

**Difficulty:** Beginner | **Price:** Free

**Link:** https://solarsystem.nasa.gov/basics/chapter6-1/

### 4. aiaa.org

American Institute of Aeronautics and Astronautics (AIAA) is a professional society for aerospace engineers and students. The site provides industry news, research publications (journals and conference proceedings), standards, education resources, events, and career tools for learning and advancing in aerospace engineering.

**Difficulty:** Intermediate | **Language:** English | **Price:** Free

**Link:** https://aiaa.org

**Tags:** websites, engineering-manufacturing, aerospace-engineering

### 5. nasa.gov

NASA.gov is the official site of the U.S. space agency, offering mission news, research results, data, and STEM education resources. It features engineering articles, technical briefs, simulations, multimedia, and classroom materials for students and educators.

**Difficulty:** Intermediate | **Language:** English | **Price:** Free

**Link:** https://nasa.gov

**Tags:** websites, engineering-manufacturing, aerospace-engineering

### 6. Space.com

Established news and explainer site covering spaceflight and astronomy. It reports on crewed and robotic missions, launches, space agencies, telescopes and night-sky events, and publishes background features that help readers follow current exploration programmes and understand their scientific goals.

**Difficulty:** Beginner | **Language:** English | **Price:** Free

**Link:** https://space.com

**Tags:** space-news, spaceflight, space-missions, astronomy, launches

## Courses

### 1. Astrodynamics (MIT 16.346)

**Author:** Richard Battin

Graduate astrodynamics built on the two-body problem: Kepler's and Lambert's problems, orbit determination, powered flight and midcourse maneuvers, multi-body methods and recursive navigation algorithms, with examples from Apollo, the Space Shuttle and Mars missions. Provides 33 lecture note files and problem sets with solutions.

**Difficulty:** Advanced | **Price:** Free

**Link:** https://ocw.mit.edu/courses/16-346-astrodynamics-fall-2008/

**Tags:** astrodynamics, two-body-problem, lamberts-problem, orbit-determination, spacecraft-navigation

## Books

### 1. Orbital Mechanics for Engineering Students

**Author:** Howard D. Curtis

Undergraduate textbook covering two-body motion, orbital elements, orbit determination from observations, Lambert's problem, orbital maneuvers and Hohmann transfers, interplanetary trajectories, and rigid-body attitude dynamics. Worked examples and MATLAB scripts prepare readers to compute and design spacecraft trajectories themselves.

**Difficulty:** Intermediate | **Language:** English | **Price:** Paid

**Link:** https://www.amazon.com/dp/0750661690?tag=edmonddante07-20

**Tags:** books, engineering-manufacturing, aerospace-engineering

### 2. Fundamentals of Astrodynamics

**Author:** Roger R. Bate, Donald D. Mueller, Jerry E. White

Inexpensive Dover text developed for the U.S. Air Force Academy covering two-body orbits, orbit determination from radar and optical observations, Kepler's problem, orbital maneuvers, lunar trajectories, and ballistic missile trajectories. Readers learn the classical analytical methods behind practical astrodynamics calculations.

**Difficulty:** Intermediate | **Language:** English | **Price:** Paid

**Link:** https://www.amazon.com/dp/0486600610?tag=edmonddante07-20

**Tags:** books, engineering-manufacturing, aerospace-engineering

---

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