(2018 ER1)
Tracked by NASA JPL Near-Earth Object Web Service (NeoWs), (2018 ER1) is a V-type (Basaltic Achondrite) body measuring between 19.08m and 42.66m in diameter. On 2026-10-21, it completes a cislunar approach at 120.35 Lunar Distances (46,282,382.1 km) with a relative heliocentric velocity of 12.94 km/s.
(2018 ER1) (JPL ID 3799826) is a V-type (Basaltic Achondrite) Near-Earth Asteroid spanning 19.1m–42.7m (mean 30.9m). On 2026-10-21, it transits Earth's cislunar surveillance sector at 120.348 Lunar Distances (46,282,382 km) with a relative velocity of 12.94 km/s and a theoretical kinetic energy reserve of 0.88 megatons TNT. Its well-constrained heliocentric ephemeris passes safely outside Earth capture corridors while serving as an orbital calibration target.
Exact Landmark Scale Comparison (42.66m)
Kinetic Impact Physics & Orbital Parameters
(2018 ER1) (H = 25.7, Vmag ≈ 24.6) is below consumer optical detection thresholds (requires ≥1000mm survey aperture); explore certified meteorite specimens[↗] or indoor optical projection instead.
Campo del Cielo Meteorite Specimen (Certified Iron-Nickel)
Authentic coarse octahedrite Group IAB iron-nickel meteorite fragment (92.9% Fe, 6.7% Ni) recovered from the Chaco crater field with certificate of authenticity.
Satin-black 5W warm-white LED optical glass lens planetarium projecting 60,000 stars and simulated meteor shower trajectories indoors.
3D Ephemeris Trajectory Waypoints
Planetary Defense Frequently Asked Questions (Schema.org FAQ)
How big is (2018 ER1) compared to city landmarks?
(2018 ER1) has an estimated diameter between 19.08m and 42.66m. At its upper-bound size of 42.66m, it stands 10% as tall as the 443m Empire State Building in New York City and 13% of the 330m Eiffel Tower.
Will (2018 ER1) impact Earth during its 2026-10-21 approach?
No. NASA JPL Center for Near-Earth Object Studies (CNEOS) orbital solutions confirm (2018 ER1) will pass safely at a minimum distance of 120.35 Lunar Distances (46,282,382.1 km). You can still simulate a hypothetical street-level impact in our 3D CesiumJS simulator.
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Ultra-portable Sony IMX678 starlight tele-camera with AI equatorial tracking and automated asteroid field stacking.
Authentic coarse octahedrite Group IAB iron-nickel meteorite fragment (92.9% Fe, 6.7% Ni) recovered from the Chaco crater field.
Low-read-noise Sony STARVIS 2 CMOS planetary and all-sky meteor bolide detection camera with 2.0μm pixels.