423100 (2004 BX1)
Tracked by NASA JPL Near-Earth Object Web Service (NeoWs), 423100 (2004 BX1) is a Q-type (Olivine-Pyroxene) body measuring between 542.69m and 1213.5m in diameter. On 2026-10-20, it completes a cislunar approach at 171.47 Lunar Distances (65,943,991.3 km) with a relative heliocentric velocity of 37.87 km/s.
423100 (2004 BX1) (JPL ID 2423100) is a Q-type (Olivine-Pyroxene) Near-Earth Asteroid spanning 542.7m–1213.5m (mean 878.1m). On 2026-10-20, it transits Earth's cislunar surveillance sector at 171.474 Lunar Distances (65,943,991 km) with a relative velocity of 37.87 km/s and a theoretical kinetic energy reserve of 173131.28 megatons TNT. Its well-constrained heliocentric ephemeris passes safely outside Earth capture corridors while serving as an orbital calibration target.
Exact Landmark Scale Comparison (1213.5m)
Kinetic Impact Physics & Orbital Parameters
423100 (2004 BX1) (H = 18.4, Vmag ≈ 18.2) 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 423100 (2004 BX1) compared to city landmarks?
423100 (2004 BX1) has an estimated diameter between 542.69m and 1213.5m. At its upper-bound size of 1213.5m, it stands 274% as tall as the 443m Empire State Building in New York City and 368% of the 330m Eiffel Tower.
Will 423100 (2004 BX1) impact Earth during its 2026-10-20 approach?
No. NASA JPL Center for Near-Earth Object Studies (CNEOS) orbital solutions confirm 423100 (2004 BX1) will pass safely at a minimum distance of 171.47 Lunar Distances (65,943,991.3 km). You can still simulate a hypothetical street-level impact in our 3D CesiumJS simulator.
High-transmission BaK-4 Porro prism 15x70 optics with tripod adapter for bright near-Earth flybys, comets, and bolide shower radiants.
Autonomous apochromatic triplet smart telescope with integrated plate-solving, live stacking, and dual-band filter for magnitude 10–16 NEOs.
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.