<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Orbit insertion - Page 2 - Wikipedia">
<p>
<a accesskey="1" href="page.php?w=orbit_insertion&amp;p=1">1.Previous</a><br />
<a accesskey="3" href="page.php?w=orbit_insertion&amp;p=3">3.Next</a>
</p>
<p>insertion. An orbit insertion maneuver involves either deceleration from a speed in excess of the respective body's <a href="page.php?w=escape_velocity">escape velocity</a>, or acceleration to it from a lower speed.</p>

<p>When the result is a <a href="page.php?w=transfer_orbit">transfer orbit</a>, e.g. a descent orbit insertion, the maneuver is an <a href="page.php?w=orbit_injection">orbit injection</a>.</p>

<p><big> Orbit types </big></p>
<p>Orbits are periodic or quasi-periodic trajectories, usually around a central <a href="page.php?w=celestial_body">celestial body</a></p><p>
<a accesskey="1" href="page.php?w=orbit_insertion&amp;p=1">1.Previous</a><br />
<a accesskey="3" href="page.php?w=orbit_insertion&amp;p=3">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
