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BEACON

Object

2018 EL4

2018EL4 · 2/3 sources · cross-match · 2 risk div.

Risk scales

TorinoT0
Palermo-7.98

Source: JPL Sentry

JPL window: 2120-2120·ESA years: 2102-2115·Last obs: 2018-04-13

Sources

Amber = past cut. Risk 2 · fields 2.

2/3 sources · match
FieldJPL CADnot presentJPL SentryNASA/JPLESA NEOCCESA Aegis
Close-approach datethreshold: date———
Miss distanceauthreshold: 3% rel———
Relative velocitykm/sthreshold: 1% rel (ESA 0.1 km/s)———
Risk yearsaggregation windows differ (informational)—2120-21202102-2115
Cumulative impact probabilitythreshold: >2× (floor 1e-7)—3.999e-82.490e-7
Palermo Scalecumulativethreshold: |Δ| > 0.5—-7.98-7.08
Torino Scalemaxthreshold: exact—T0T0
Estimated diameter* from absolute magnitude—30 m30 m *

Detected · 2 fields · 2 risk

  • cumulativeImpactProbability [risk · >2× (floor 1e-7)] · jpl-sentry=3.999e-8 · esa-neocc=2.49e-7Aggregation windows differ (informational): JPL 2120-2120 vs ESA 2102-2115. Cumulative threshold still applies.
  • palermoScaleCumulative [risk · |Δ| > 0.5] · jpl-sentry=-7.98 · esa-neocc=-7.08Aggregation windows differ (informational): JPL 2120-2120 vs ESA 2102-2115. Cumulative threshold still applies.