File:PIA22556-BinaryAsteroid-2017-YE5-Animation-20180712.gif
https://photojournal.jpl.nasa.gov/catalog/PIA22556
Artist's concept of what binary asteroid 2017 YE5 might look like. The two objects showed striking differences in radar reflectivity, which could indicate that they have different surface properties.
More information about asteroids and near-Earth objects is available at http://www.jpl.nasa.gov/asteroidwatch.