Mission Control/ASTEROID DOSSIER: (2016 JG38)
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NOMINAL CISLUNAR PASSAGEGEMMA ENGINE: LOCAL SERVER BOX [ACTIVE] • meteors-gemma:latest

(2016 JG38)

Tracked by NASA JPL Near-Earth Object Web Service (NeoWs), (2016 JG38) is a Q-type (Olivine-Pyroxene) body measuring between 41.74m and 93.33m in diameter. On 2026-10-18, it completes a cislunar approach at 61.31 Lunar Distances (23,576,778.4 km) with a relative heliocentric velocity of 15.82 km/s.

LOCAL SERVER-BOX GEMMA SYNTHESIS (http://127.0.0.1:11434/v1):

(2016 JG38) (JPL ID 3753578) is a Q-type (Olivine-Pyroxene) Near-Earth Asteroid spanning 41.7m–93.3m (mean 67.5m). On 2026-10-18, it transits Earth's cislunar surveillance sector at 61.307 Lunar Distances (23,576,778 km) with a relative velocity of 15.82 km/s and a theoretical kinetic energy reserve of 13.73 megatons TNT. Its well-constrained heliocentric ephemeris passes safely outside Earth capture corridors while serving as an orbital calibration target.

Max Diameter (Ø)
93.33 m
Min: 41.74 m
Miss Distance
61.31 LD
23,576,778.4 km
Rel. Velocity
15.82 km/s
56,963 km/h
Kinetic Energy
38.207 MT
E = ½mv² TNT eq.

Exact Landmark Scale Comparison (93.33m)

1:1 Meter Scale
93.33m
(2016 JG38)
443m
Manhattan
227m
Golden Gate
330m
Eiffel Tower
828m
Burj Khalifa
Inspect side-by-side in interactive Google Earth 3D Tiles:Open 3D Street-Level Simulator

Kinetic Impact Physics & Orbital Parameters

45° Incidence · 3,000 kg/m³
Absolute Magnitude (H)24.02 mag
Spectral ClassificationQ-type (Olivine-Pyroxene)
Estimated Bolide Mass1.277e+9 kg
Kinetic Energy (E = ½mv²)38.207 MT TNT (1.60e+17 J)
Transient Crater Diameter / Depth1,975 m Ø / 415 m deep
5-PSI Structural Overpressure Radius6.49 km
Thermal 3rd-Degree Burn Radius12.47 km
Equivalent Seismic MagnitudeMw 5.7
Primary Ephemeris Source:NASA JPL Small-Body Database Lookup
OPTICAL TRACKING REQUIREMENTS // PHOTOMETRIC LINK
TIER C: PLANETARY RADAR / SPECIMEN GRADE
Calculated Apparent Magnitude (Vmag)
Vmag +21.37
Abs. Magnitude H = 24.02
Required Aperture (mm)
≥ 1000 mm (Planetary Radar)
Professional ≥1000mm Survey CCD / Planetary Bistatic Radar Telemetry
Best Viewing Window
JPL Goldstone Radar / Vera C. Rubin LSST Ephemeris Window Only
Target: (2016 JG38)

(2016 JG38) (H = 24.0, Vmag ≈ 21.4) is below consumer optical detection thresholds (requires ≥1000mm survey aperture); explore certified meteorite specimens[↗] or indoor optical projection instead.

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3D Ephemeris Trajectory Waypoints

Node T+0Lat 24.18° · Lon -137.95°136,800 km
Node T+1Lat 32.07° · Lon -128.37°122,617 km
Node T+2Lat 38.22° · Lon -118.78°109,667 km
Node T+3Lat 42.46° · Lon -109.20°97,950 km
Node T+4Lat 44.67° · Lon -99.62°87,467 km
Node T+5Lat 44.80° · Lon -90.03°78,217 km

Planetary Defense Frequently Asked Questions (Schema.org FAQ)

How big is (2016 JG38) compared to city landmarks?

(2016 JG38) has an estimated diameter between 41.74m and 93.33m. At its upper-bound size of 93.33m, it stands 21% as tall as the 443m Empire State Building in New York City and 28% of the 330m Eiffel Tower.

Will (2016 JG38) impact Earth during its 2026-10-18 approach?

No. NASA JPL Center for Near-Earth Object Studies (CNEOS) orbital solutions confirm (2016 JG38) will pass safely at a minimum distance of 61.31 Lunar Distances (23,576,778.4 km). You can still simulate a hypothetical street-level impact in our 3D CesiumJS simulator.

Hall-of-Fame Near-Earth Asteroids & Historic CNEOS Bolides
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(2016 JG38) — 3D Orbit, Size Comparison & Kinetic Impact Physics | Meteors.ai Space Network