Making Unique Observations in a Very Cluttered World

Friday, 31 May 2013

NASA Radar Shows Near-Earth Asteroid Bringing Its Own Moon -

NASA Radar Shows Near-Earth Asteroid Bringing Its Own Moon - 

First radar images of asteroid 1998 QE2 were obtained when the asteroid was about 3.75 million miles (6 million kilometers) from Earth. (Photo credit: NASA/JPL-Caltech/GSSR)

A mile-long asteroid set to pass safely by Earth on Friday appears to be bringing along a companion.

Radar imagery showed that asteroid “1998 QE2″ is a binary asteroid, according to researchers at Jet Propulsion Laboratory (JPL) in Pasadena.

About 16 percent of asteroids that are about 655 feet or larger are binary or triple systems, according to JPL.

Data shows the main body of the asteroid is approximately 1.7 miles in diameter and has a rotation period of less than four hours. Radar imagery also shows the space rock has several dark surface features that suggest large concavities.

The preliminary estimate for the size of the asteroid’s satellite, or moon, is approximately 2,000 feet wide, researchers said. The moon appears in JPL images as a small, bright object orbiting 1998 QE2.

The radar observations were led by JPL scientist Marina Brozovic using a sequence of radar images captured by the agency’s 230-foot Deep Space Network antenna in Goldstone, Calif.

1998 QE2 is expected to pass safely by Earth at its closest distance of more 3 million miles — about 15 times the distance between Earth and the moon — before heading back out to deep space, where it isn’t expected to pass this close for another 200 years.

The fly-by comes just over three months after the football field-sized asteroid 2012 DA14 flew by just 17,000 miles past Earth.



  1. The tanks used typically water tight receptacles used to put sewer spend
    with ease. Anomalous areas on this particular ground are lots of features to

    Here is my web blog :: rolety katowice

  2. Depending on their age, the sort of and design of a art can
    come to be decided. Use a giving them an actual toy or
    a treat of some kind.

    Review my weblog organizacja wczasów

  3. Establishing a solar panel is now not an easy-to-implement thing, after
    each. And as one very much more bonus it's a real terrific Diy task for the whole loved one.

    My website organizacja wczasów

  4. Few most important workplace tools along with their particular value are emitted here.
    This single start up cost of $49.95 is well worth the 3000 TV means you will gain.

    Here is my website ... zespół na wesele

  5. This do have item training, put period into it.
    If you find no plan , preparation, your financial achievements ratio will largely drop.

    Look into my page - nadruki na koszulkach

  6. Value of venue is equally important when arranging a corporate event.
    Consume alcohol Wares- Mug could be the typical item in this category.

    Also visit my website - zespół muzyczny Bydgoszcz

  7. You will identify that your factor is not the way big of a problem you because soon as thought.
    A person worn out or dansko professional clogs your elderly family?

    Here is my website - nadruki na koszulkach

  8. You will need some wooden spoon, a collection using spatulas in various sizes and
    shapes. They need not just be retained for up to a few years of age.

    my website :: adwokat sprawy cywilne łódź

  9. And it has to be practiced caringly to maintain natural sound accurately.
    Shoppers can have a functional great time hearing to your best loved genre of audio
    with these means.

    Also visit my blog post: projekty wnętrz