Houston, we are made of Marble...

NASA scientists are tracking the upcoming Halloween flyby of asteroid 2015 TB145 with several optical observatories and the radar capabilities of the agency’s Deep Space Network at Goldstone, California. The asteroid named „Great Pumpkin“ will fly past Earth at a safe distance slightly farther than the moon’s orbit on Oct. 31 at 10:05 a.m. PDT (1:05 p.m. EDT). Scientists are treating the flyby of the estimated 1,300-foot-wide (400-meter) asteroid as a science target of opportunity, allowing instruments on the earth to scan it during the close pass.
http://www.stone-ideas.com/2015/10/28/houston-we-have-a-pumpkin-halloween-asteroid-a-treat-for-radar-astronomers/