asteroid to come close, 65m on 4-2

Discussion in 'Science and Nature' started by spuckle, Mar 16, 2012.

  1. asteroid 2012 eg5, NASA classified as a the highest danger level, conditions code 9. Some people say it'll be 30 miles above us, NASA stats say .7 lunar distance, 65m wide. 1ld=395,000 km. grab a telescope, a blunt, n sit back and watch the show on the 2nd
  2. Will we be able to see it go by?
  3. #3 hynes20, Mar 16, 2012
    Last edited by a moderator: Mar 18, 2012
    It won't be passing by us til next February
  4. NEO Earth Close Approaches

    April 1st/2nd.

    Will pass like 143,000 miles away from us. Doubtful we'll be able to see it though.
  5. You think so? What about our gravity pulling it in closer
  6. .7 lunar distance... is 155,000 miles.....

    some say 30 miles? lol

    i think NASA is a better guess
  7. don't you think nasa took that into consideration? they aren't just throwing guesswork out there. they can precisely calculate the orbit of pretty much any object provided they can observe it well enough.

    anyway, asteroid at 150,000 miles away will probably not be visible even in a telescope, they just don't reflect enough light.
  8. April 2nd? Thats my birthday... so my family comes to get me off of this planet after all. HIGH FIVE!
  9. within a reasonable amount yes.

    from Predicting Apophis' Earth Encounters in 2029 and 2036

    "Trajectory predictions for asteroids are normally based on a standard model of the solar system that includes the gravity of the Sun, Moon, other planets, and the three largest asteroids.

    However, additional factors can influence the predicted motion in ways that depend on rarely known details, such as the spin of the asteroid, its mass, the way it reflects and absorbs sun-light, radiates heat, and the gravitational pull of other asteroids passing nearby. These were examined, along with the effect of Earth's non-uniform gravity field during encounters, and limitations of the computer hardware performing the calculations.

    One would normally look for the influence of such factors as they gradually alter the trajectory over years. But, for Apophis, the changes remain small until amplified by passage through Earth's gravity field during the historically close approach in 2029. "

    [SIZE=-1px]38 m - 85 m = 125-280 ft[/SIZE] so yea, they will be pretty hard to see, although as long as you know where they will be then you should be able to see them with a telescope. It's close enough that it might have a tail from the sun. Keep in mind, if they are on the "to pass us" list them they are at least observable.
  10. which part of earth will be able to see it if it happens?

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