The <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Potentially_hazardous_asteroid" id="mwAYQ" rel="mw:WikiLink" title="Potentially hazardous asteroid">potentially hazardous asteroid</a> <a class="mw-redirect" href="https://en.wikipedia.org/wiki/2005_YU55" id="mwAYU" rel="mw:WikiLink" title="2005 YU55">2005 YU55</a> passes 0.85 <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Lunar_distance_(astronomy)" id="mwAYY" rel="mw:WikiLink" title="Lunar distance (astronomy)">lunar distances</a> from Earth (about <span about="#mwt60" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"324600"},"2":{"wt":"km"},"disp":{"wt":"or"}},"i":0}}]}' id="mwAYc" typeof="mw:Transclusion">324,600 kilometres or 201,700 miles</span>), the closest known approach by an asteroid of its <a href="https://en.wikipedia.org/wiki/Absolute_magnitude#Solar_system" id="mwAYg" rel="mw:WikiLink" title="Absolute magnitude">brightness</a> since <span about="#mwt61" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"mpl","href":"./Template:Mpl"},"params":{"1":{"wt":"2010 XC"},"2":{"wt":"15"}},"i":0}}]}' id="mwAYk" typeof="mw:Transclusion"><a href="https://en.wikipedia.org/wiki/2010_XC15" rel="mw:WikiLink" title="2010 XC15">2010 XC<span style="position: relative; top: 0.3em;"><span style="font-size:80%;">15</span></span></a></span> in 1976.