Ok, a titanium encrusted turd, maybe. Although the titanium would probably just act like aluminum foil, and the turd would still probably vaporize. Then all's that would be left is the titanium, which could probably punch a pretty good hole into a house or something.
I was amazed to discover that small meteors that impact earth have their crusts instantly frozen when going through one of the layers of the atmosphere (upper?) but the interior remains extremely hot for some time. So that would be a cool missile, blows a hole in the roof and showers the occupants with hot turd! SPLAT
See the thing is, not only has neutronium never been proven to exist, the nearest hypothetical source is dozens or hundreds of light-years away, and it's so dense that by the time is was within a million miles of the Earth it would have crushed half the solar system.