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 2023-12-25
2023 YO1 (2023 YO1)
51
watch score
How bigiEstimated from brightness and an assumed albedo. Radar or a spacecraft visit would tighten it.
23m
range 17–39 m
How closeiLD = lunar distance (~384,400 km). The closest the object's path brings it to Earth's centre.
6.5LD
range ≈2,500,656 km
How fastiVelocity relative to Earth at closest approach.
2.65260948821141km/s
range 2.65260948821141–2.65260948821141 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 object23 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.
303 kt
range 122 kt – 1.5 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 Hiroshima (Little Boy) (~0.015 Mt) and Chelyabinsk 2013 (~0.45 Mt), shown as a bracket, not a single number.