The rock, dubbed 2018 LA, was picked up by the Catalina Sky Survey on Saturday morning, just hours before it piled into our home world at a speed of 10 miles per second, or 0.5368 per cent of the maximum velocity of a sheep in a vacuum in El Reg units.
Initial estimates had the impact zone stretching from southern Africa across the Indian Ocean into New Guinea.
Asteroid 2018 LA was almost as far away as the moon (which is typically about 239,000 miles, or 384,600 km, from Earth) when it was first discovered on Saturday, NASA officials said.
This doesn't mean the asteroid touched down on Earth and was spirited away by shadowy men in dark suits.
The Minor Planetary Centre said 'object no longer exists (in its original form), following its entry into the Earth's atmosphere on 2 June 2018.
It can be seen tumbling towards Earth but although it looks as if it has exploded on impact, experts who were monitoring the asteroid said it burned up entering the atmosphere.
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NASA says the asteroid was only six feet across - classified as "boulder-sized" - and was only the third asteroid to have been captured on an "impact trajectory". The smaller an asteroid is, the less light it reflects, and thus the dimmer it appears. The asteroid hit Earth's atmosphere over the southern African nation of Botswana at 12:44 p.m. EDT (1644 GMT) while hurtling down at a whopping 38,000 miles per hour (61,155 km/h).
The first in 2008 was detected 19 hours ahead of impact, and the second was detected a few hours ahead in 2014.
But in a nice bit of detective work, two additional observations were obtained by the ATLAS asteroid survey that were used by the Scout system to narrow down the predicted impact points in southern Africa.
The first event of this kind was the impact of asteroid 2008 TC3, which lit up the predawn sky above Northern Sudan on October 7, 2008.
Think again. Humanity has only detected an asteroid on a collision course a handful of times - and only one other of these sightings took place with ample time to spare before it hit us.
Smaller objects are fainter and more hard to spot in a large sky, though efforts like the NASA-funded Catalina Sky Survey are increasingly able to search a wider field of sky to find these somewhat elusive objects.
He said: "The advantage I had was I saw it in colour and it was not like on the cameras".