99942 Apophis (previously known by its provisional designation 2004 MN4) is a near-Earth asteroid that will fly closely past the orbit of Earth on April 13, 2029 and again in 2036. It will fly between the orbit of Earth and the orbit of the hundreds of satellite systems we have orbiting our planet. 99942 Apophis has a diameter of 325 meters (1,066 ft) and it will easily be visible both during the day as well as the night by the naked eye.
APOPHIS - Discovered on June 19, 2004, is an asteroid about as wide as the Empire State Building is tall. On April 13, 2029, it will streak through space within 20,000 miles (32,200 km) of Earth, the closest any celestial object of that size has come to our planet in modern history. If it gets within 600 miles of Earth's "gravitational key-hole" it will go around the sun and hit our planet 7 years later in 2036. This site is dedicated to watching Apophis.