Factual error: Rico lives in Buenos Aires, which has no hills within a couple of hundred miles. The city shown in the film has hills.
Factual error: The meteor that hits Buenos Aires was fired from Klendathu, a planet that, per the galactic chart shown after the hit, to be a third of the way around the galaxy. That the crew of the Roger Young had time to detect it and avoid it means it was not traveling at any kind of hyper velocity. It means it would have had to have been fired from Klendathu millions of years previously. That is some long range planning.
Factual error: The last thing Rico's parents say before the meteor strikes is, "Looks like rain," as the sky outside gets darker. As a large meteor (large enough to destroy a major city) makes it's appearance in the atmosphere, there would be a flash of light brighter than the sun. Several minutes later a dark dust cloud would rise, but by then everyone in the vicinity would be killed.