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 2007-01-09
2007 AA2 (2007 AA2)
35
watch score
How bigiEstimated from brightness and an assumed albedo. Radar or a spacecraft visit would tighten it.
43m
range 32–71 m
How closeiLD = lunar distance (~384,400 km). The closest the object's path brings it to Earth's centre.
17.8LD
range ≈6,832,281 km
How fastiVelocity relative to Earth at closest approach.
7.20585017436304km/s
range 7.20585017436304–7.20585017436304 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
This object43 m
20-storey tower65 m
Stadium250 m
Eiffel Tower330 m
Impact energyiKinetic energy converted to TNT-equivalent, with the size and speed ranges propagated through.
2.6 Mt
range 1.1 Mt – 12 Mt
Where that sits
Hiroshima
Chelyabinsk
Tunguska
Tsar Bomba
At this size and speed it would most likely airburst high in the atmosphere — energy between Chelyabinsk 2013 (~0.45 Mt) and Tunguska 1908 (~12 Mt), shown as a bracket, not a single number.