Astrodynamics
Bandwidth available from an areostationary satellite
Mars Network - Marsats - NASA site devoted to future communications infrastructure for Mars exploration
Mars Network- Marsats
Latest calculations of proper elements for numbered minor planets at astDys hamilton bin
AstDyS: proper elements page
Java Astrodynamics Toolkit jat
Java Astrodynamics Toolkit (JAT)
Delta V pages at Caltech
Rockets and Space Transportation
World of Physics: Eccentricity wolfram physics eccentricity
Eccentricity -- from Eric Weisstein's World of Physics
Table of times for Equinoxes, Solstices, Perihelion, and Aphelion in 1992-2020 navy mil data docs
Earth's Seasons, etc. 1992-2020
List of satellites in geostationary orbit
List of satellites in geostationary orbit
Graphical derivation of the geostationary orbit radius for the Earth.
Geostationary Orbit — Steve Sque, University of Exeter
Science Presse data on Geosynchronous Orbits (including historical data and launch statistics) geostationary
Spacecrafts in Geostationary Orbit
Nasa.gov: Geosynchronous Orbit liftoff nasa academy satellites geo high
Geosynchronous Orbit
Stanford Encyclopedia of Philosophy entry plato stanford entries spacetime
Space and Time: Inertial Frames
Celestrak Two-Line Elements FAQ columns
CelesTrak: "FAQs: Two-Line Element Set Format"
Spacetrack Report No. 3 , a really serious treatment of orbital elements from NORAD (in pdf format)
You've Got Questions. We've Got www.froola.com.
another tutorial marine mrs education class paul orbits
Keplerian Elements
Keplerian Elements tutorial keps
Keplerian Elements Tutorial
Orbital Mechanics (Rocket and Space Technology)
Orbital Mechanics
Retrograde Animation articles retrogrades retro
Retrogradation is a phenomenon caused by the fact that we live on a planet which is not at the center of the solar system.
Equinox and Solstice.com equinox and solstice html
The Vernal Equinox
Groundhog Day and the Spring Equinox landscaping about
Spring Equinox | Groundhog Day as Looking Ahead to Spring Equinox
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It uses material from the Wikipedia articles :
Areostationary orbit , Asteroid family , Astrodynamics , Delta-v budget , Eccentricity (orbit) , Equinox , Geostationary orbit , Geosynchronous orbit , Inertial frame of reference , Orbital elements , Planetary orbit , Retrogradation , Vernal equinox , .
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