On May 17, 2026, we track the imminent arrival of Asteroid 2026 JH2. Discovered just days ago, this basketball-court-sized near-Earth object is set to pass just 56,000 miles from Earth's surface—well beneath the Moon's orbital path. We break down NASA's tracking metrics, its structural similarities to the 2013 Chelyabinsk meteor, and how you can watch the flyby live.