2007-10-12 05:37:30 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
They are all listed at this website:
http://neo.jpl.nasa.gov/orbits/
All these are followed; calculations are made to find the probability that it could hit us. There have been a few 'alerts' but, every time, refined calculations showed that there was no real danger... yet.
Near the top of the page, click on "close approaches" to see the most recent ones (good, they missed us) and the upcoming ones. The column to watch is called "Miss Distance LD" where 1.0 would mean that the asteroid will pass at a distance of 384,400 km from Earth (that is the Moon's orbital distance from Earth). Anything bigger than 1.0 passes outside the Moon's orbit.
The next close one is 'scheduled' for October 18 (has the very poetic name of 2007 TW24) and will pass 3.0 LDs from us (over one million kilometres). It is a rather small thing (100 ft across).
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We just had one at 0.4 LD (still over 150,000 km) miss us -- as expected. It is called 2007 TX22 and measures about 30 ft across.
2007-10-12 06:00:48 · answer #1 · answered by Raymond 7 · 1⤊ 0⤋
loosen up, it will miss. bypass back on your referenced website and study it a splash extra heavily and you will locate this -- "The asteroid grow to be stumbled on previous due final 300 and sixty 5 days and initially scientists gave it a a million-in-3 hundred possibility of hitting the Earth on April 13, 2029. next prognosis of recent and archived pre-discovery photographs confirmed that Apophis won't collide with Earth that day, yet that later in 2035, 2036, and 2037 there maintains to be a a million-in-6,250 possibility that the asteroid ought to hit Earth, Scheeres pronounced. Conversely, this could be a ninety 9.ninety 8 % possibility that the asteroid will miss Earth. The asteroid is comparatively small, in regards to the scale of three soccer fields. If it hit it does no longer create extensive-scale injury to the Earth, yet would reason substantial injury on the impression website, Scheeres pronounced." As for any destiny impacts, right this is the interesting statistic from that website ==> "...yet that later in 2035, 2036, and 2037 there maintains to be a a million-in-6,250 possibility that the asteroid ought to hit Earth..." notably long odds i'd say.
2016-12-29 06:25:27 · answer #2 · answered by ? 3 · 0⤊ 0⤋
It has not been detected an asteriod big enough to cause a big impact in earth yet. A few years ago some people supposedly discover one that was going to cause some problems, but they re-did some calculations and was a false alarm.
Sounds like a conspiracy.
Maybe there still is one that is gonna hit the earth, but the person's government who spotted it probably abruptly ended the speculation to prevent chaos and disorder.
2007-10-12 06:05:34 · answer #3 · answered by Jansen J 4 · 0⤊ 0⤋
The Apophis asteroid is scheduled to pass so near earth in 2029 that it will actually be closer than most telecommunications satellites orbiting the planet.
Its pass by the planet will alter its course so that it will pass us again in 2036. At one point this asteroid had the highest probability ever predicted of hitting earth. Current figures, however, project it will pass safely by.
2007-10-12 08:15:59 · answer #4 · answered by Anonymous · 0⤊ 0⤋
thousands of asteriods come to the earth every year attracted by its gravity, but they are so small that get desintegrated in the atmosphere.
It has not been detected an asteriod big enough to cause a big impact in earth yet. A few years ago some people supposedly discover one that was going to cause some problems, but they re-did some calculations and was a false alarm.
Have fun!
2007-10-12 05:44:54 · answer #5 · answered by Jens 2 · 0⤊ 0⤋
some have in the past, and some will again in the future, and will undoubtedly hit us again in the future (as they have in the past). we dont yet have the technology to watch the skies from all directions and guarantee that we could see an approaching asteriod or other rock in time to prevent it from hitting the earth. so we dont know which ones will do it.
2007-10-12 05:43:25 · answer #6 · answered by laoda 1 · 0⤊ 0⤋
Supposedly there is going to be one in 2029 that will come CLOSER to the Earth than the Moon is.
2007-10-12 06:59:06 · answer #7 · answered by harryb 5 · 0⤊ 0⤋
Sure, given enough time. Even ones whose orbits we've charted could if they hit another asteroid and their orbit changed. That would require serious bad luck, but its possible. But if you're talking about your lifetime, probably not.
2007-10-12 08:17:14 · answer #8 · answered by Anonymous · 0⤊ 1⤋