Asteroid 2017 GM was first observed by the Mount Lemmon Survey in Arizona on April 3, 2017. On April 4, it came within 10,100 miles from Earth. Gianluca Masi (Virtual Telescope Project) and Michael Schwartz (Tenagra Observatories. Ltd) captured an image of the space rock a few hours prior to closest approach. -- Full Story:
Credit: Space.com / animation courtesy: NASA/JPL-Caltech / image courtesy: Gianluca Masi (Virtual Telescope Project) and Michael Schwartz (Tenagra Observatories. Ltd) / edited by @SteveSpaleta