ESO has published photos of the asteroid 1999 KW4 taken using the SPHERE instrument mounted on the VLT in Chile. This is part of a campaign of observations coordinated by the International Asteroid Warning Network (IAWN), which followed the UN recommendations to set up the control of potentially dangerous asteroids. 1999 KW4 passed 5.2 million kilometers from the Earth on May 25, 2019, an absolutely safe distance but it was a good opportunity to assess the possibility of keeping an eye on the trajectory of what’s actually a double asteroid even using an instrument designed to photograph exoplanets.