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ORBit is a CORBA 2.4 compliant Object Request Broker (ORB). It features mature C, C++ and Python bindings, and less developed bindings for Perl, Lisp, Pascal, Ruby, and Tcl. Most of the code is distributed under the LGPL license, although the IDL compiler and utilities use the GPL.

ORBit was originally written to serve as middleware for the GNOME project, but has seen use outside of the project.

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Simple English

Orbit is also a word for an eye socket.
File:Orbit2.gif
Two bodies with a slight difference in mass orbiting around a common barycenter. The sizes, and this particular type of orbit are similar to the Pluto-Charon system.

An orbit is the path that an object takes in space when it goes around a star, a planet, or a moon. It can also be used as a verb. For instance: “The earth orbits around the Sun.” The word ‘revolves’ has the same meaning.

Many years ago, people thought that the sun orbits in a circle around the earth. Every morning the sun came up in the east and went down in the west. It just seemed to make sense that it was going around the earth. But now, thanks to people like Copernicus and Galileo Galilei, we know that the sun is the center of the solar system, and the earth orbits around it. Since a satellite is an object in space that revolves around another object, the earth is a satellite of the sun, just like the moon is a satellite of the earth! The sun has lots of satellites orbiting around it, like the planets, and thousands of asteroids, comets, and meteoroids. The earth just has one natural satellite (the moon), but there are lots of artificial satellites orbiting the earth.

When people first began to think about orbits, they thought that all orbits had to be perfect circles, and they thought that the circle was a "perfect" shape. But when people began to study the motions of planets carefully, they saw that the planets were not moving in perfect circles. Some of the planets have orbits that are almost perfect circles, and others have orbits that are longer and less like a perfect circle.

Orbital Period

An orbital period is the time that it takes for one object - that is, satellite - to orbit around another object. For instance, the Earth's orbital period is one year: 365.25 days. (The extra ".25" is why we have a leap day once every four years.)

Elliptical and eccentric orbits

Johannes Kepler (lived 1571-1630) wrote mathematical "laws of planetary motion", which gave a good idea of the movements of the planets because he found that the orbits of the planets in our solar system are not really circles, but are really ellipses (a shape like an egg or a "flattened circle"). Which is why planet's orbits are described as elliptical. The more elliptical an orbit is, the more eccentric the orbit is.

Isaac Newton (lived 1642-1727) used his own ideas about gravity to show why Kepler's laws worked the way they did.








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