This elevated it to Level 3 on the Torino scale, a system used since 1999 to categorize potential Earth impact events. Level 3, which falls within the yellow band of the Torino Scale, is described ...

When 2024 YR 4 was thought to have a 3.1% chance of hitting Earth, that placed it in the scale’s intermediate yellow zone. The flurry of news coverage about the asteroid has brought the Torino ...

A 0 is white, a 1 is green, 2-4 is yellow, 5-7 is orange, and 8-10 is red. A level 3 rating on the Torino Impact Hazard Scale means that 2024 YR4 is in the yellow zone, which the scale says ...