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 2020-07-18
2020 OM (2020 OM)
45
watch score
How bigiEstimated from brightness and an assumed albedo. Radar or a spacecraft visit would tighten it.
15m
range 11–24 m
How closeiLD = lunar distance (~384,400 km). The closest the object's path brings it to Earth's centre.
9.1LD
range ≈3,488,749 km
How fastiVelocity relative to Earth at closest approach.
9.44908241104762km/s
range 9.44908241104762–9.44908241104762 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 object15 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.
136 kt
range 54 kt – 557 kt
Where that sits
Hiroshima
Chelyabinsk
Tunguska
Tsar Bomba
At this size and speed it would most likely airburst high in the atmosphere — energy between Hiroshima (Little Boy) (~0.015 Mt) and Chelyabinsk 2013 (~0.45 Mt), shown as a bracket, not a single number.