<?xml version="1.0"?>
<param xml:id="r_phobos">
    <!--<TemporaryFillValue>NaN</TemporaryFillValue>-->
    <get>
        <vi name="mars:phobos:orb">
            <baseParam name="MSO"/>
        </vi>
    </get>
    <process>magnitude($mars_phobos_orb_MSO)/RADIUS_MARS</process>
    <output/>
</param>