The link you followed will bring you to this page:

https://impact.ese.ic.ac.uk/ImpactEarth/cgi-bin/crater.cgi?dist=&distanceUnits=1&diam=2&diameterUnits=2&pdens=&pdens_select=3000&vel=6&velocityUnits=1&theta=45&wdepth=&wdepthUnits=1&tdens=2500