Solar System.
Flyby Comet Imaged By Radar
Jet Propulsion Laboratory https://www.jpl.nasa.gov/ March 30, 2016
Radar data of comet P/2016 BA14 taken over three days (March 21-23, 2016), when the comet was between 2.5 million miles and 2.2 million miles (4.1 million kilometers and 3.6 million kilometers) from Earth.