On May 18, an asteroid designated 2026 JH2 will pass Earth at a distance four times closer than the Moon. The object, comparable in size to Chicago’s Cloud Gate sculpture, poses no threat to the planet.
Size and Trajectory of 2026 JH2
The asteroid measures approximately 12 meters in diameter, similar to the iconic bean-shaped public artwork in Millennium Park. Its closest approach will bring it within 93,000 kilometers of Earth, a fraction of the 384,400 kilometer average lunar distance.
NASA’s Center for Near Earth Object Studies has tracked the object since its discovery earlier this year. The trajectory places it firmly in the category of near Earth objects that pass regularly without incident.
Scientific Significance of Close Approaches
Close flybys like this one allow astronomers to refine orbital models and gather data on asteroid composition. Radar observations during the pass can reveal surface features and rotation rates that are difficult to measure at greater distances.
The asteroid will travel at a speed of roughly 14 kilometers per second relative to Earth. Observatories in the northern hemisphere are expected to capture images as it moves across the sky.
Public Safety and Monitoring
International space agencies continuously monitor objects of this size. An asteroid of 12 meters would likely break apart in the atmosphere if it entered, causing a bright fireball but no ground damage, as seen with the Chelyabinsk event in 2013.
The European Space Agency’s asteroid risk list currently shows no impact threats for the foreseeable future. 2026 JH2 will remain on tracking lists to ensure its orbit is well understood for future passes.
Amateur astronomers with moderate telescopes may be able to observe the asteroid on the night of May 17 and 18, provided skies are clear. The object will appear as a slow moving point of light against the background stars.
Following this approach, 2026 JH2 is expected to return to the inner solar system in approximately 18 months, based on current trajectory calculations. Further observations will refine that estimate.
