I would recommend using a calculator designed by experts, like https://impact.ese.ic.ac.uk/ImpactEarth/ImpactEffectsMap/ instead of ChatGPT. I get a low-end estimate of tens of megatons.

Based on even the slightest bit of checking you could see that that number is utter bullshit, 5Kt is nothing at all like the impact of an asteroid of this size.

https://en.wikipedia.org/wiki/Chelyabinsk_meteor

Was 100 times as much and was only an 18 meter asteroid.

This seems like it's off by ~6 orders of magnitude

(see https://en.wikipedia.org/wiki/Impact_event)

Amusing addendum, in order for this asteroid to have a 5Kt impact energy it would need to be traveling at around 50 mph as it impacts earth.

A typical impact velocity would be something closer to 30,000 mph.

ChatGPT also believes the moon is made out of green cheese.

(Less snarky: It hallucinates an answer. It can't do math. Do not rely on ChatGPT for math. Or facts.)