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BEACON

Object

2009 HC

2009HC · 2/3 sources · cross-match

Close approach

Miss distance sketch — not a real orbit plot.

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JPL CAD
0.016028 au · 6.24 LD
2027-Apr-09 23:37 · 4.16 km/s
ESA NEOCC
0.016029 au · 6.24 LD
2027-04-09 · 4.20 km/s
JPL uncertainty (dist_min–max)
0.016027 0.016030 au

Sources

Amber = past cut. Risk 0 · fields 0.

2/3 sources · match
FieldJPL CADNASA/JPLJPL Sentrynot presentESA NEOCCESA Aegis
Close-approach datethreshold: date2027-Apr-09 23:372027-04-09
Miss distanceauthreshold: 3% rel0.0160280.016029
Relative velocitykm/sthreshold: 1% rel (ESA 0.1 km/s)4.164.20
Risk yearscumulative aggregation window
Cumulative impact probabilitythreshold: >2× (floor 1e-7)
Palermo Scalecumulativethreshold: |Δ| > 0.5
Torino Scalemaxthreshold: exact
Estimated diameter* from absolute magnitude40 m *