(2007 TH1)
Tracked by NASA JPL Near-Earth Object Web Service (NeoWs), (2007 TH1) is a S-type (Silicate Stony) body measuring between 111.83m and 250.06m in diameter. On 2026-10-21, it completes a cislunar approach at 137.53 Lunar Distances (52,891,435.5 km) with a relative heliocentric velocity of 24.83 km/s.
(2007 TH1) (JPL ID 3387458) is a S-type (Silicate Stony) Near-Earth Asteroid spanning 111.8m–250.1m (mean 180.9m). On 2026-10-21, it transits Earth's cislunar surveillance sector at 137.534 Lunar Distances (52,891,436 km) with a relative velocity of 24.83 km/s and a theoretical kinetic energy reserve of 650.76 megatons TNT. Classified as a Potentially Hazardous Asteroid (PHA) due to its Minimum Orbit Intersection Distance (MOID <= 0.05 AU) and absolute magnitude (H <= 22.0), it remains under high-priority radar and optical astrometric tracking.
Exact Landmark Scale Comparison (250.06m)
Kinetic Impact Physics & Orbital Parameters
(2007 TH1) (H = 21.9, Vmag ≈ 21.1) 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 (2007 TH1) compared to city landmarks?
(2007 TH1) has an estimated diameter between 111.83m and 250.06m. At its upper-bound size of 250.06m, it stands 56% as tall as the 443m Empire State Building in New York City and 76% of the 330m Eiffel Tower.
Will (2007 TH1) impact Earth during its 2026-10-21 approach?
No. NASA JPL Center for Near-Earth Object Studies (CNEOS) orbital solutions confirm (2007 TH1) will pass safely at a minimum distance of 137.53 Lunar Distances (52,891,435.5 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.