Asteroid #2012DA14 has made its closest approach to Earth, safely passing our planet 17,500 miles above Indonesia. It's now headed away.
It may not look like much, but this is the asteroid big enough to flatten London that narrowly missed the Earth tonight. The 150ft-wide space rock came as as close as 17,200 miles to Earth's surface.
The asteroid, given the name of 2012 DA14, has been closely tracked since its discovery by a Spanish observatory a year ago.
You can watch live images from the Bayfordbury AllSky Camera here. Hover over the image for information on what you're seeing.
Despite cloudy skies, scientists at the Bayfordbury Observatory at the University of Hertfordshire are still hoping to get a glimpse of the asteroid in the next 90 minutes.
Cloud is breaking up David has just imaged Jupiter.
The asteroid, given the not so catchy name of 2012 DA14, has been closely tracked since its discovery by a Spanish observatory a year ago. It is predicted to reach its nearest point to Earth at around 7.30pm tonight UK time.
Sky watchers have been told that given clear skies they should be able to track the rock climbing in the north-eastern sky from anywhere in the UK.
It will be possible to see it if you know where to look, but just waving your binoculars in the right general direction isn't going to work.
The asteroid will be a faint dot of light moving at a steady rate between the stars. It'll be thousands of times fainter than Jupiter and 250 times fainter than the stars of the Plough.
– Robin Scagell, vice-president of the Society for Popular Astronomy
The trick will be to find the area in advance and wait for it to come through. You can use the star maps to find exactly the right part of the sky. If you hold your binoculars steady you will see this tiny point of light crawling across your field of view in about seven or eight minutes.
It's not easy, but you will have the thrill of knowing you are seeing a little object in space the size of an office block.
An asteroid called 2012 DA14 will narrowly miss Earth as it flies past at 7pm tonight.
The 45 metre diameter rock is big enough to destroy London.
It has no chance of hitting, but it will enter the orbit of more than 100 satellites.
It is expected to fly 17,200 miles (27,000 kilometres) above Earth's surface at around 7pm GMT.
The flyby of 2012 DA14 is the closest-ever predicted approach to Earth for an object this large.
There's speculation that the meteor could be linked to an asteroid that will pass through satellite space later today.
It is believed to be 50 metres wide and capable of wiping out a city the size of London and is expected to miss Earth by a distance of over 17,000 miles but is the closest ever predicted for an object of that size.
Astronomer Nigel Henbest told ITV News the asteroid is not linked to the Russian meteor:
An asteroid is expected to pass between the Earth and the moon this evening.
Although it will not hit Earth, it could hit one of its surrounding satellites.
Space journalist and Astrophysicist Sarah Cruddas told Daybreak that scientists knew very little about asteroids.
She said studying them can help provide a better understanding as to why we came to be here on the Earth.