Looking at the JPL Horizons plot of YU55. Orbits of Main Belt Asteroids Vesta & Dembowska.

*** Courtesy of TBar1984 on Youtube

NASA JPL YU55 Nov 1st Conference:http://www.ustream.tv/recorded/18250783

2005 YU55 Goldstone Radar Observations Planning:http://echo.jpl.nasa.gov/asteroids/2005YU55/2005YU55_planning.html

JPL Horizons Web-Interface: http://ssd.jpl.nasa.gov/horizons.cgi

JPL 2005 YU55: http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005%20YU55%20;orb=0;cov=0;log=0;cad=1#orb

Goldstone Radar Detection of 45p/Honda:http://echo.jpl.nasa.gov/asteroids/45P_HMP/comet.hmp.html

Stereo Orbit Tool for Vesta: http://stereo-ssc.nascom.nasa.gov/where/

Dawn Mission to Vesta: http://dawn.jpl.nasa.gov/

JPL 349 Dembowska (1892 T): http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Dembowska;orb=0;cov=0;log=0;cad=0#orb

April 29, 2010 - Arecibo Radar Telescope reveals 2005 YU55 as a spherical object of about 400 meters:
http://www.pressoffice.cornell.edu/releases/release.cfm?pageid=46419
http://www.jpl.nasa.gov/asteroidwatch/newsfeatures.cfm?release=2010-144