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BEACON

Object

2020 HQ4

2020HQ4 · 2/3 sources · cross-match · 1 risk div.

Risk scales

TorinoT0
Palermo-5.28

Source: JPL Sentry

JPL window: 2051-2122·ESA years: 2065-2126·Last obs: 2020-05-19

Close approach

Miss distance sketch — not a real orbit plot.

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ESA NEOCC
0.010787 au · 4.20 LD
2027-03-14 · 3.30 km/s

Sources

Amber = past cut. Risk 1 · fields 1.

2/3 sources · match
FieldJPL CADnot presentJPL SentryNASA/JPLESA NEOCCESA Aegis
Close-approach datethreshold: date——2027-03-14
Miss distanceauthreshold: 3% rel——0.010787
Relative velocitykm/sthreshold: 1% rel (ESA 0.1 km/s)——3.30
Risk yearsaggregation windows differ (informational)—2051-21222065-2126
Cumulative impact probabilitythreshold: >2× (floor 1e-7)—8.924e-53.170e-5
Palermo Scalecumulativethreshold: |Δ| > 0.5—-5.28-5.70
Torino Scalemaxthreshold: exact—T0T0
Estimated diameter* from absolute magnitude—14 m15 m *

Detected · 1 fields · 1 risk

  • cumulativeImpactProbability [risk · >2× (floor 1e-7)] · jpl-sentry=0.0000892405099 · esa-neocc=0.0000317Aggregation windows differ (informational): JPL 2051-2122 vs ESA 2065-2126. Cumulative threshold still applies.