(2011 OB57)
Tracked by NASA JPL Near-Earth Object Web Service (NeoWs), (2011 OB57) is a Unreported by NASA NeoWs body measuring between 16.77m and 37.5m in diameter. On 2026-10-27, it completes a cislunar approach at 146.63 Lunar Distances (56,389,129.3 km) with a relative heliocentric velocity of 18.15 km/s.
(2011 OB57) (JPL ID 3576729) is a Unreported by NASA NeoWs Near-Earth Asteroid spanning 16.8m–37.5m (mean 27.1m). On 2026-10-27, it transits Earth's cislunar surveillance sector at 146.629 Lunar Distances (56,389,129 km) with a relative velocity of 18.15 km/s and a theoretical kinetic energy reserve of 1.17 megatons TNT. Its well-constrained heliocentric ephemeris passes safely outside Earth capture corridors while serving as an orbital calibration target.
Exact Landmark Scale Comparison (37.5m)
Kinetic Impact Physics & Orbital Parameters
(2011 OB57) (H = 26.0, Vmag ≈ 25.4) 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 (2011 OB57) compared to city landmarks?
(2011 OB57) has an estimated diameter between 16.77m and 37.5m. At its upper-bound size of 37.5m, it stands 8% as tall as the 443m Empire State Building in New York City and 11% of the 330m Eiffel Tower.
What does the stored 2026-10-27 close-approach estimate show?
This catalog snapshot lists a nominal miss distance of 146.63 Lunar Distances (56,389,129.3 km) for (2011 OB57). This is not an impact prediction; check the latest NASA JPL record for updated orbital estimates. The 3D impact simulation is hypothetical.
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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.