Full Breakdown
Near-Earth Asteroid 2026 JH2 to Pass Within 56,000 Miles of Earth on 18 May 2026
5/14/2026, 1:42:34 AM
Event Overview
On 18 May 2026, the Apollo-class near-Earth object (NEO) designated 2026 JH2 will travel within ? 56,000 miles (? 90,000 km) of Earth’s surface. Current orbital calculations show no impact risk. The asteroid’s closest approach to the Moon will occur around 06:51 UTC, followed by its nearest pass to Earth at roughly 09:23 UTC.
Background & Context
2026 JH2 was first detected on 10 May 2026 by the Mount Lemmon Survey in Tucson, Arizona, and by Farpoint Observatory in Eskridge, Kansas. The discovery was entered into the Minor Planet Center’s database two days later. Classified as an Apollo-class NEO, its orbit crosses Earth’s path around the Sun, a characteristic that prompts routine monitoring by NASA’s Jet Propulsion Laboratory (JPL) and other agencies.
Timeline
- 10 May 2026 – Initial detection by Mount Lemmon Survey and Farpoint Observatory.
- 12 May 2026 – Announcement of discovery and preliminary orbit.
- 18 May 2026, 06:51 UTC – First close approach to the Moon (? 0.00284 AU).
- 18 May 2026, 09:23 UTC – Closest Earth approach (? 0.00064 AU).
- 18 May 2026, 21:45 UTC – Virtual Telescope Project begins live webcast.
Data & Statistics
- Size: Estimates range from 50–100 ft (? 15–30 m) per JPL to 50–115 ft (? 15–35 m) per other analyses.
- Distance: 0.00064 AU (? 90,000 km, 56,000 mi), about 24 % of the average lunar distance.
- Brightness: Predicted to brighten from magnitude 21.3 on 12 May to ? 12.8 by 19 May, with peak magnitude ? 11.5 during the flyby.
- Observations: 24 positional measurements recorded over several days.
Why It Matters
The flyby offers a rare opportunity to observe a sub-kilometer NEO at moderate brightness with modest amateur telescopes. It also validates detection pipelines that track objects with limited observation arcs, reinforcing planetary-defense readiness. Public livestreams increase outreach and awareness of near-Earth object monitoring.
Official Statements & Responses
NASA’s JPL notes that the asteroid’s orbit “crosses Earth’s orbit” but that current models show no collision probability. The agency emphasizes ongoing refinement of orbital parameters as additional observations are obtained. The Virtual Telescope Project announced a live broadcast of the encounter, stating that the event will be visible to the naked eye of modest telescopes and that the webcast will begin at 21:45 UTC on 18 May. Observatories involved in the discovery highlighted the collaborative nature of the detection effort across five sites, including Farpoint Observatory (Kansas) and Mount Lemmon Observatory (Arizona).
Conflicting Reports & Gaps
Size estimates differ between sources (50–100 ft vs. 50–115 ft). Distance is reported as 56,000 mi (90,000 km) in most outlets, while one source lists 91,000 km. The asteroid has been observed only 24 times, leaving residual uncertainties in its exact trajectory and physical properties.
Verbatim Quotes
- “These asteroids have an orbit that is larger than Earth's orbit around the Sun and their path crosses Earth's orbit,” — NASA
- “Mario Tama/Getty Images The asteroid, designated 2026 JH2, is likely between 50 and 100 feet across, according to estimates from NASA’s Jet Propulsion Laboratory.” — NASA JPL
- “The asteroid was identified several days ago by astronomers at five observatories, including Farpoint Observatory in Wabaunsee County, Kansas, and Mount Lemmon Observatory in Arizona’s Santa Catalina Mountains.” — Observatories
- “Should you not have access to clear skies and a telescope, the Virtual Telescope Project will begin livestreaming observations of the asteroid at 7:45 pm UTC.” — Virtual Telescope Project
- “The Virtual Telescope Project will show it to you live!” — Virtual Telescope Project
What’s Next
The Virtual Telescope Project will stream the encounter live on 18 May, after which NASA will continue to collect astrometric data to further refine 2026 JH2’s orbit. Ongoing monitoring will assess any future close approaches and inform long-term planetary-defense strategies.
