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BEACON

Object

2009 QR

2009QR · 2/3 sources · cross-match · 2 risk div.

Risk scales

TorinoT0
Palermo-7.74

Source: JPL Sentry

JPL window: 2042-2107·ESA years: 2069-2069·Last obs: 2009-08-22

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)2042-21072069-2069
Cumulative impact probabilitythreshold: >2× (floor 1e-7)1.708e-76.710e-9
Palermo Scalecumulativethreshold: |Δ| > 0.5-7.74-9.45
Torino Scalemaxthreshold: exactT0T0
Estimated diameter* from absolute magnitude12 m12 m *

Detected · 2 fields · 2 risk

  • cumulativeImpactProbability [risk · >2× (floor 1e-7)] · jpl-sentry=1.70806e-7 · esa-neocc=6.71e-9Aggregation windows differ (informational): JPL 2042-2107 vs ESA 2069-2069. Cumulative threshold still applies.
  • palermoScaleCumulative [risk · |Δ| > 0.5] · jpl-sentry=-7.74 · esa-neocc=-9.45Aggregation windows differ (informational): JPL 2042-2107 vs ESA 2069-2069. Cumulative threshold still applies.