4660 Nereus (1982 DB)
Tracked by NASA JPL Near-Earth Object Web Service (NeoWs), 4660 Nereus (1982 DB) is a Xe body measuring between 330m and 330m in diameter. On 2031-03-02, it completes a cislunar approach at 44.78 Lunar Distances (17,212,537 km) with a relative heliocentric velocity of 9.77 km/s.
4660 Nereus (1982 DB) (JPL ID 4660) is a Xe Near-Earth Asteroid spanning 330.0m–330.0m (mean 330m). On 2031-03-02, it transits Earth's cislunar surveillance sector at 44.778 Lunar Distances (17,212,537 km) with a relative velocity of 9.77 km/s and a theoretical kinetic energy reserve of 611.72 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 (330m)
Kinetic Impact Physics & Orbital Parameters
4660 Nereus (1982 DB) (H = 18.8, Vmag ≈ 15.4) 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 4660 Nereus (1982 DB) compared to city landmarks?
4660 Nereus (1982 DB) has an estimated diameter between 330m and 330m. At its upper-bound size of 330m, it stands 74% as tall as the 443m Empire State Building in New York City and 100% of the 330m Eiffel Tower.
What does the stored 2031-03-02 close-approach estimate show?
This catalog snapshot lists a nominal miss distance of 44.78 Lunar Distances (17,212,537 km) for 4660 Nereus (1982 DB). 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.
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