[DoodleBob]

The Palermo Scale is common in approach to the Torino Scale, which I believe provides a better visual approach to seeing where the NEOs plot out:

Apophis has a potential y-axis value of 880. If the average chance of an asteroid impact is 1 in 40,000 and if Apophis' probability is 1000x less than the average, this NEO has an x-axis value of 10 ^-8.

We're easily in the white / 0 zone. Stand down.

[SunkenCiv]

Thanks DoodleBob. The 2029 pass is sufficiently close (given that the mass estimate is still likely to be wrong) that the trajectory of its pass in 2036 remains uncertain, but it wasn't going to be too close anyway (150 lunar distances, it sez here).