Potentially Hazardous Asteroids (PHAs)

For all you Asteroid doom mongers here is a list of all known PHAs
and their close approach data through to the end of the 21st century.
Starting with the infamous Apophis.
This list was last updated on 2011 Oct. 31.
www.minorplanetcenter.net...

Here is a neat little gif that shows you just how busy it is in our neighborhood.
www.minorplanetcenter.net...
Enlarge the gif to get a clearer view.

Remember, the one you dont see is the one that gets you!!
How many more may be out there?
Is NASA,JPL, TPTB. Being straight with us, only time will tell or will it?

reply to post by remymartin


OH MY GAWD WE'RE GOING TO DIEEEEEEEEEEEEE!!

Jokes aside, thats a pretty cool list

S&F for you!

reply to post by nusnus


Thanks i love the animation it really is busy out there
sl

That gif is definetly intimidating

reply to post by remymartin

Wow there are a lot but why are they not in order?

reply to post by Char-Lee


They are in order of which will come closer to earth(or hit)( i will add that for the doom mongers)
sl

Il give a cookie to anyone that can identify Apophis out of that lot lol

Apophis 2462240.41 2029 Apr. 13.91 0.0002379 2 oppositions, 2004-2008 E2009-U50 (99942)

Thank God most of us will be dead from Fukushima cancers by 2029.

apophis is going to come pretty close in 2029.... so why is there an emergency broadcast scheduled for the 9th when comet yu55 is suppose to be around, also why are they going to do sunami prevention drills that day? what the hell is going on????

Originally posted by remymartin
reply to post by Char-Lee

 

They are in order of which will come closer to earth(or hit)( i will add that for the doom mongers)
sl

Oh thanks..I am a Doom Monger and proud of it! Love Doom so distracting from all my woes! thanks for the added Doom related topic!

What worries me is one of them being kicked out of their orbit via a collision. So really, even though we know we aren't in any danger for the next 100 years, this is not necessarily true, and is open to chance. It is kinda scary in my opinion, although I don't advocate doom and gloom, and there is not much we can do about really.

Unless a government somewhere has a special team that is actually equipped to deal with an impact scenario that is, and have been practicing without the public's knowledge. I suppose it is possible, but I doubt that would be kept secret.

I like the image you linked, and it puts things into perspective. Nice.

If the chance of us getting hit by PHAs is less than 1% say
then the chance of them hitting each other must be less than that(i think)
oww my brain hurts now

Love the gif animation link. Scary stuff!

The gif looks scary for a couple of reasons and the biggest reason is the relative size so the objects can be seen. If you were looking down on the solar system with the orbit of Mars easily in your field of view the only visible object you could make out would be the sun. In order for the earth to be a single pixel in size on that graphic the size of the orbit of Mars would have to be 357,412,751 pixels in diameter making that whole graphic about 4 hundred million pixels wide and tall.

Now consider the size of most of those asteroids being a millionth the mass of our moon and you'll get a clearer image of the amount of empty space in that graphic. So if earth was one pixel, and that pixel is one tenth of a millimeter, that graphic would be 14.636 kilometers square, or 9.094 miles square.

So obviously if your field of view is over 9 miles, you could not see earth at a tenth of a millimeter in diameter. You would be hard pressed to see a meter, 10,000 times larger.