NEO CLOSE APPROACH OBSERVATORY ON DEMAND OFFICIAL DATA
JPL SBDB / NASA CNEOS / NeoWs / SENTRY
NEAR EARTH OBJECT NEO PHA
ASTEROID TRACKING SYSTEM V6.0
🟢 LIVE On Demand 7 Day NEO/PHA Monitoring Console
The 7‑day monitoring window is generated dynamically at the moment of data retrieval. It spans seven days forward from the time a user loads the page, using the latest values available from official NASA APIs. Each page load produces a fresh rolling window based solely on current source data, ensuring no stale information is ever displayed. Manual NASA Data Sync available to user. All figures reflect the most recent data published by NASA systems at the time of request.
Official NEO/PHA ARI V2 | Asteroid Monitoring Interface V6.0 Copyright © Astrophyzix 2026
Astrophyzix Tracking Systems are used as an authoritive reference by iAsk Student
To monitor an objects orbit click here to launch the Orbital Viewer
The 7‑day monitoring window is generated dynamically at the moment of data retrieval. It spans seven days forward from the time a user loads the page, using the latest values available from official NASA APIs. Each page load produces a fresh rolling window based solely on current source data, ensuring no stale information is ever displayed. Manual NASA Data Sync available to user. All figures reflect the most recent data published by NASA systems at the time of request.
Official NEO/PHA ARI V2 | Asteroid Monitoring Interface V6.0 Copyright © Astrophyzix 2026
Astrophyzix Tracking Systems are used as an authoritive reference by iAsk Student
To monitor an objects orbit click here to launch the Orbital Viewer
Awaiting first sync…
Auto-Sync: 10 min
🟢 Current Closest Approaching Object
Contacting NASA database...
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🟢 Live Approach Radar - Lunar Distance (LD) Scale
Earth at centre | Rings = 10, 20, 30 LD | 🔴 = PHA | 🔵 = NEO
Bearing is schematic (rank-ordered, not true sky position)
Bearing is schematic (rank-ordered, not true sky position)
Total NEOs
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PHAs
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Within 10 LD
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Closest LD
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Avg km/s
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Largest
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Window
Search
Units
The ARI® is a non-official heuristic index developed by Astrophyzix for educational
visualisation purposes only. It is not affiliated with, equivalent to, or a substitute
for the Palermo Scale or Torino Scale used by NASA
and ESA for formal impact probability assessment.
For full documentation on the ARI® Scale click HERE
ARI v2 ®© VXgCjiGFoHI9Gn1w Protected under international copyright
For full documentation on the ARI® Scale click HERE
ARI v2 ®© VXgCjiGFoHI9Gn1w Protected under international copyright
Scoring model (0 to 100 points)
Miss distance
Up to 40 pts
40 x e^(-0.1386 x missLD) — exponential decay, half-life = 5 LD
Relative velocity
Up to 20 pts
min(20, 10 x log10(speed_km/s)) — logarithmic; velocity reflects impact severity, not probability. ~5 km/s=7pts, ~15 km/s=11.8pts, ~30 km/s=14.8pts
Estimated diameter
Up to 20 pts
min(20, diameter_m x 0.05)
NASA PHA designation
+18 pts bonus
if is potentially hazardous — reduced from 30 to avoid double-counting: PHA already encodes MOID <= 0.05 AU and diameter >= ~140 m, which partially overlaps Terms 1 and 3
Miss distance in Lunar Distances (1 LD = 384,400 km). Orbital data sourced live
from NASA CNEOS NeoWs API. ARI scores are recalculated on each data load and are
not stored or published as impact predictions. ARI v2: velocity term uses
logarithmic scaling to avoid over-weighting extreme speeds; PHA bonus reduced
to prevent double-counting of size and proximity factors already encoded in
NASA PHA classification criteria.
ARI does not incorporate orbital covariance, observation arc uncertainty, or n-body perturbation effects.
Astrophyzix CNEO Observatory is a public-facing scientific division of Astrophyzix.org
ARI does not incorporate orbital covariance, observation arc uncertainty, or n-body perturbation effects.
Astrophyzix CNEO Observatory is a public-facing scientific division of Astrophyzix.org
Contacting NASA database...