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What does 'Apophis' mean? Apophis is no different from other asteroids in that it is a remnant from the early formation of our solar system about 4.6 billion years ago. ... Earth-based telescopes ...
99942 Apophis (provisional designation 2004 MN 4) is a near-Earth asteroid and a potentially hazardous object, 450 metres (1,480 ft) by 170 metres (560 ft) in size, [3] that caused a brief period of concern in December 2004 when initial observations indicated a probability of 2.7% that it would hit Earth on Friday, April 13, 2029.
Apophis hitting Earth is possible, study finds, but very unlikely. Astronomers have long had their eye on the notorious Apophis, which was initially believed to pose a serious threat to Earth upon ...
On December 24, 2004, 370 m (1,210 ft) asteroid 99942 Apophis (at the time yet unnamed and therefore known only by its provisional designation 2004 MN 4) was assigned a 4 on the Torino scale, the highest rating given to date, as the information available at the time translated to a 1.6% chance of Earth impact in April 2029. [90]
[36] [37] [38] [1] These telescopes are notable for their large 7.4° field of view — about 15 times the diameter of the full moon — of which their 10 500 × 10 500 CCD camera images the central 5.4° × 5.4°. This system can image the whole night sky visible from a single location with about 1000 separate telescope pointings.
The infrared telescope would be launched atop a SpaceX Falcon 9 rocket, to be placed into a Venus-trailing Heliocentric orbit around the Sun. Orbiting between the Sun and Earth, the Sun's rays would always be behind the telescope's lens and thus never inhibit the space observatory's ability to detect asteroids or other near-Earth objects (NEOs).
Apophis, a space rock roughly 1,200 feet (366 meters) across, will come within 20,000 miles (32,187 kilometers) of Earth in about 5 ½ years, which is closer than satellites that orbit our planet ...
The symbol for 99942 Apophis, a near-Earth asteroid discovered in 2004 that attracted interest when initial observations suggested a significant probability of an Earth impact in 2029 (a possibility since eliminated), is much later. It was designed by Denis Moskowitz, who also designed many of the dwarf-planet symbols, at a time when asteroid ...