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Asteroid 2026 JH2 Passes Earth Safely, 56,000 Miles Away

5/18/2026

Summary

Asteroid 2026 JH2 Flyby

Asteroid 2026 JH2 will safely pass Earth on Monday, May 18, 2026.
It will come within about 56,000 miles (90,000 km), roughly a quarter of the Earth-Moon distance.
NASA’s Jet Propulsion Laboratory estimates the rock is 15–35 m wide and will travel ~19,417 mph at closest approach.
The Virtual Telescope Project will livestream the flyby from Italy at 3:45 p.m. EDT on May 18.
Mount Lemmon Survey and U.S. observatories confirmed the Apollo-class asteroid poses no impact risk.

Summary

Asteroid Detection Needed

Scientists say the pass of asteroid 2026 JH2 shows faster detection systems are needed.
The asteroid was discovered only days before its May 18, 2026 approach, showing a brief warning.
If it struck land, the 16-30 m rock could cause casualties and damage, with an ocean impact likely.
Amateurs can observe the asteroid with 150–200 mm telescopes, enabling participation in near-Earth monitoring.
The event follows asteroid 2025 TF, which passed within 260 m of Earth this year.

Summary

NASA Tests Deflection

NASA's Double Asteroid Redirection Test (DART) mission is a landmark kinetic-deflection experiment for planetary defense.
Scientists are also evaluating explosives and spacecraft impacts as alternatives to alter an asteroid’s trajectory.
Private-sector firms are developing asteroid-deflection technologies alongside government projects.
The Artemis Accords, signed by many nations, set principles that could enable joint asteroid-deflection missions.
NASA estimates the overall risk of catastrophic asteroid impacts in the 21st century is low.

History

Historical Context

On 15 February 2013 a superbolide over Chelyabinsk, Russia, exploded in an air burst that damaged roughly 7,200 buildings and injured 1,491 people. The Apollo-group asteroid was later studied by NASA’s Jet Propulsion Laboratory and other researchers, providing detailed data on the blast. The incident now drives global efforts to upgrade detection and develop deflection techniques.

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Asteroid 2026 JH2 Flyby

Asteroid 2026 JH2 will safely pass Earth on Monday, May 18, 2026.
It will come within about 56,000 miles (90,000 km), roughly a quarter of the Earth-Moon distance.
NASA’s Jet Propulsion Laboratory estimates the rock is 15–35 m wide and will travel ~19,417 mph at closest approach.
The Virtual Telescope Project will livestream the flyby from Italy at 3:45 p.m. EDT on May 18.
Mount Lemmon Survey and U.S. observatories confirmed the Apollo-class asteroid poses no impact risk.

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