April 13, 2029, the spot light will streak across the sky gets brighter
and faster. At some point, he will travel more than the width of the full Moon
minute and he will get as bright as the stars in the Little Dipper. but it is
is not satellite or plane – this would be 1100 feet in width (340 m wide)
near-Earth asteroid called Apophis 99942, which will cruise harmless on Earth,
about 19,000 miles (31,000 km) above the surface. It is at a distance
that some of our spacecraft, orbiting the Earth.
The international scientific community asteroid could not be more excited.
Planetary Protection conference College Park, Maryland, scientists
I am going to discuss observations plans and opportunities for science
celestial event a decade away. During the session of April 30, scientists
will discuss everything from how to observe the hypothetical mission event
we could send to the asteroid.
Apophis close approach in 2029 will be an incredible opportunity for science "
said Marina Brozovi?, radar scientist at NASA's Jet Propulsion Laboratory in
Pasadena, California, which operates on the basis of radar observations of the & # 39 objects Near-Earth objects (NEOs).
"We will observe the asteroid with radar and optical telescopes. C
radar observations, we might be able to see the details of the surface, which with the & # 39 are only a few
meters in size ".
rarely an asteroid of this size to pass so close by Earth. although
Scientists have noticed small asteroids, about 5-10 meters, flying
Earth at the same distance, an asteroid the size of Apophis is much less
number and so does not pass so close to Earth as often.
asteroid, like a moving star-like points of light will be the first to
visible to the naked eye in the night sky over the Southern Hemisphere & # 39; eat flies over
Land from the east coast to the west coast of Australia. it will be
in the middle of the morning on the east coast of the United States, if Apophis above
Australia. It will then cross the Indian Ocean, and in the afternoon
Eastern US, it will cross the equator, is still moving west over Africa.
At closest approach, just before 6:00 pm EDT, Apophis will be over the Atlantic Ocean
– and it will move so fast that it will cross the Atlantic in just one hour. on
7 pm EDT, the asteroid will be across the United States.
A team of astronomers at Kitt Peak National Observatory discovered Apophis in
Astronomers could only detect the asteroid in two days before the technical
and questions out & # 39; I prevented further observations. Fortunately, the other team
rediscovered asteroid at Siding Spring Survey in Australia later that
per year. Observations furor – the initial orbital calculations
It showed that the asteroid had a 2.7% chance of impacting the Earth in 2029.
Fortunately, additional observations are completely exclude this possibility.
his discovery, optical and radar telescopes tracked Apophis as
continues in its orbit around the Sun, so we know their future trajectory well enough.
Current estimates indicate that Apophis will still have a small chance of influencing
Earth, less than 1 in 100,000 decades from now, but in future measurements
its position can be expected to avoid any possible consequences.
the most important observations of Apophis will take place in 2029, when the asteroid
Scientists around the world will be able to conduct close-up
study Apophis size, shape, composition, and perhaps even its inter & # 39; er.
conference, scientists will discuss such questions as: "How the Earth Will
gravity affects the asteroid as it passes by?, "" Can we use Apophis
Span learn about inter & # 39; EASURES asteroid? "And" Should we send
Spacecraft Mission Apophis? "
we already know that a close encounter with the Earth changes orbit of Apophis,
but our model also shows a close approach could change the path of this asteroid
back, and it is possible that there will be some changes in the surface, like a little
avalanches, "said David Farnocchia, an astronomer at JPL Center for
On Earth & # 39 test subjects (CNEOS), which is a & # 39 is co-chair of the session 30 April
Apophis with Brozovi?.
with & # 39 is representative of about 2,000 currently known malicious
Asteroids (GHG) emissions, "said Paul Chodas, director CNEOS.» Watching
Apophis during its 2029 flyby, we will get important scientific knowledge,
may one day be used for planetary protection ".
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Jet Propulsion Laboratory, Pasadena, Calif.