886859 (2021 UN7)
Tracked by NASA JPL Near-Earth Object Web Service (NeoWs), 886859 (2021 UN7) is a Unreported by NASA NeoWs body measuring between 56.31m and 125.9m in diameter. On 2026-10-31, it completes a cislunar approach at 39.82 Lunar Distances (15,312,408.1 km) with a relative heliocentric velocity of 14.85 km/s.
886859 (2021 UN7) (JPL ID 2886859) is a Unreported by NASA NeoWs Near-Earth Asteroid spanning 56.3m–125.9m (mean 91.1m). On 2026-10-31, it transits Earth's cislunar surveillance sector at 39.817 Lunar Distances (15,312,408 km) with a relative velocity of 14.85 km/s and a theoretical kinetic energy reserve of 29.73 megatons TNT. Its well-constrained heliocentric ephemeris passes safely outside Earth capture corridors while serving as an orbital calibration target.
Exact Landmark Scale Comparison (125.9m)
Kinetic Impact Physics & Orbital Parameters
886859 (2021 UN7) (H = 23.4, Vmag ≈ 19.8) 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 886859 (2021 UN7) compared to city landmarks?
886859 (2021 UN7) has an estimated diameter between 56.31m and 125.9m. At its upper-bound size of 125.9m, it stands 28% as tall as the 443m Empire State Building in New York City and 38% of the 330m Eiffel Tower.
What does the stored 2026-10-31 close-approach estimate show?
This catalog snapshot lists a nominal miss distance of 39.82 Lunar Distances (15,312,408.1 km) for 886859 (2021 UN7). 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.