These objects are tracked and are NOT on a collision course with Earth. “If it hits” is a hypothetical to show scale.
Near-Earth object · discovered 2007-06-21
523808 523808 (2007 ML24)
67
watch score
How bigiEstimated from brightness and an assumed albedo. Radar or a spacecraft visit would tighten it.
479m
range 359–802 m
How closeiLD = lunar distance (~384,400 km). The closest the object's path brings it to Earth's centre.
9.0LD
range ≈3,476,894 km
How fastiVelocity relative to Earth at closest approach.
16.7578064373225km/s
range 16.7578064373225–16.7578064373225 km/s
CompositioniInferred from spectral type. Drives whether an impact would airburst or reach the ground.
Stony
range Stony (assumed)
If it hit — a scale comparison, not a forecast
How big is that, really?
Bus12 m
20-storey tower65 m
Stadium250 m
Eiffel Tower330 m
This object479 m
Impact energyiKinetic energy converted to TNT-equivalent, with the size and speed ranges propagated through.
8381 Mt
range 3528 Mt – 39340 Mt
Where that sits
Hiroshima
Chelyabinsk
Tunguska
Tsar Bomba
An object this size would reach the ground and excavate a crater. The figures below are a scale comparison — 523808 (2007 ML24) is not on an impact trajectory.