Astrophyzix | Open Access Digital Observatory: Planetary Defence, NEO, Space Science Data Research

PLANETARY DEFENCE OBSERVATORY - LIVE DATA: NASA CNEOS

ESA / NASA CNEO- Astrophyzix CNEO

ASTROPHYZIX PLANETARY DEFENCE
NEAR EARTH OBJECT OBSERVATORY

🟢 Live NEO/PHA Monitoring Console - 7-Day Window - Data Sync Every Page Load
Official NEO/PHA ARI V2 Monitoring System Copyright © Astrophyzix 2026

🕛 Observatory Time UTC

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🗓️ MONITORING Window

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🪨 Objects Detected

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⚠️ Potentially Hazardous

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OFFICIAL Data Source

NASA CNEOS NeoWs API - Live Connection

🟢 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

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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Astrophyzix Risk Index (ARI) — Methodology + Show

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.

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

Filter objects:

Sort: Miss Distance Sort: ARI Score Sort: Size Sort: Speed Sort: Date

Contacting NASA database...

Data: NASA CNEOS via NeoWs API | Astrophyzix CNEO Observatory
View Historical PHA Catalogue
Distances in Lunar Distances (1 LD = 384,400 km)
ARI = Astrophyzix Risk Index — non-official heuristic. Not the Palermo or Torino Scale.