This is our best look yet at asteroid 2014 JO25, which made its closest pass by Earth for at least the next 500 years on April 19, 2017. The animation above is composed of radar observations made from NASA’s Goldstone facility in California when the asteroid was between 1.53 and 1.61 million miles away. These and earlier, lower-resolution images obtained the previous day (you can see those here) showed this asteroid to be a contact binary—two objects connected by a “neck” of material, not unlike the comet 67P that ESA’s Rosetta mission explored. The largest section of JO25 is estimated to be 2,000 feet (610 meters) wide, and at its widest the entire asteroid is about 3,300 feet (1 km) across. Observations also show JO25 rotates once every 4.5 hours.
SPACE NEWS FLASH: On Wednesday, April 19, the asteroid 2014 JO25 will pass by Earth, coming as close as about 1.1 million miles at 12:24 UTC (8:24 a.m. EDT / 5:24 a.m. PDT). Yes, this asteroid is fairly large—just under half a mile across—and is traveling very fast—about 21 miles a second— BUT even so it poses no danger to Earth as 1.1 million miles is still over four and a half times the distance to the Moon…and it’s simply not going to get any closer than that.
It’s. Just. Not.