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BEACON

Object

2021 PK4

2021PK4 · 2/3 sources · cross-match

Risk scales

TorinoT0
Palermo-6.26

Source: JPL Sentry

JPL window: 2060-2076·ESA years: 2060-2075·Last obs: 2021-08-10

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 yearsaggregation windows differ (informational)2060-20762060-2075
Cumulative impact probabilitythreshold: >2× (floor 1e-7)1.481e-52.090e-5
Palermo Scalecumulativethreshold: |Δ| > 0.5-6.26-6.15
Torino Scalemaxthreshold: exactT0T0
Estimated diameter* from absolute magnitude8 m8 m *