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BEACON

Object

2009 ST171

2009ST171 · 2/3 sources · cross-match

Risk scales

TorinoT0
Palermo-6.79

Source: JPL Sentry

JPL window: 2066-2066·ESA years: 2066-2066·Last obs: 2009-09-29

Sources

Amber = past cut. Risk 0 · fields 0.

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 yearscumulative aggregation window—2066-20662066-2066
Cumulative impact probabilitythreshold: >2× (floor 1e-7)—1.118e-61.720e-6
Palermo Scalecumulativethreshold: |Δ| > 0.5—-6.79-6.57
Torino Scalemaxthreshold: exact—T0T0
Estimated diameter* from absolute magnitude—15 m14 m *