1. Headline
  1. Headline
Image: 2002 AM31 orbit
NASA / JPL
This graphic plots the orbit of the near-Earth asteroid 2002 AM31 through the solar system. The city-block size asteroid will fly by Earth on Sunday, coming within 17 lunar distances to the planet.
updated 7/20/2012 8:55:53 PM ET 2012-07-21T00:55:53

A city-block size asteroid will fly by Earth this weekend, well beyond the orbit of the moon, and you can watch it zip safely by live in an online webcast.

The asteroid 2002 AM31 will make its closest approach to Earth on Sunday, when it will pass by at a range of about 3.2 million miles (5.2 million kilometers). That's about 13.7 times the distance between Earth and the moon.

On Sunday, the Slooh Space Camera skywatching website will host two live webcasts to offer Internet denizens views of the space rock from telescopes at the Prescott Observatory in Arizona and the Canary Islands, off the west coast of Africa.

Asteroid 2002 AM31 has no chance of hitting Earth this weekend, scientists say, though it is on the watch list as an object that may one day pose a future concern. The space rock is listed as a "potentially hazardous asteroid" by the Minor Planet Center in Cambridge, Mass.

Asteroid 2002 AM31 was discovered in 2002. It's being tracked by radar by astronomers at NASA's deep-space radio antenna in Goldstone, Calif., and at the Arecibo Observatory in Puerto Rico for its weekend flyby.

A July 12 look at the asteroid by the Arecibo radar suggests the asteroid is about 1,115 feet wide (340 meters), according to a Goldstone radar observation planning update. But a notice from NASA's Asteroid Watch program at the Jet Propulsion Laboratory in Pasadena, Calif., estimates that the asteroid is more than twice that size, with a diameter of about 2,600 feet (792 meters).

  1. Space news from NBCNews.com
    1. Teen's space mission fueled by social media
      KARE

      Science editor Alan Boyle's blog: "Astronaut Abby" is at the controls of a social-media machine that is launching the 15-y...

    2. Buzz Aldrin's vision for journey to Mars
    3. Giant black hole may be cooking up meals
    4. Watch a 'ring of fire' solar eclipse online

Sunday's webcasts are scheduled for 7:30 p.m. ET and 11 p.m. ET. They can be accessed at the Slooh website: http://www.slooh.com

"Near-Earth asteroid 153958 (2002 AM31) represents one of approximately 9,000 whizzing past Earth at any given moment and we wanted to highlight this one as it's only 13.7 lunar distances from Earth and well over one city block big — similar to near-Earth asteroid LZ1 which zoomed past us unexpectedly mid-June," Slooh Space Camera president Patrick Paolucci told Space.com.

Paolucci, Slooh's Paul Cox and Astronomy Magazine's Bob Berman will provide commentary during the asteroid flyby webcast, with astronomer Matt Francis of the Prescott Observatory joining for the second session.

Follow Space.com on Twitter at@Spacedotcom. We're also onFacebookandGoogle+.

© 2013 Space.com. All rights reserved. More from Space.com.

Interactive: Below the belt

Photos: Month in Space: January 2014

loading photos...
  1. Southern stargazing

    Stars, galaxies and nebulas dot the skies over the European Southern Observatory's La Silla Paranal Observatory in Chile, in a picture released on Jan. 7. This image also shows three of the four movable units that feed light into the Very Large Telescope Interferometer, the world's most advanced optical instrument. Combining to form one larger telescope, they are greater than the sum of their parts: They reveal details that would otherwise be visible only through a telescope as large as the distance between them. (Y. Beletsky / ESO) Back to slideshow navigation
  2. A balloon's view

    Cameras captured the Grandville High School RoboDawgs' balloon floating through Earth's upper atmosphere during its ascent on Dec. 28, 2013. The Grandville RoboDawgs’ first winter balloon launch reached an estimated altitude of 130,000 feet, or about 25 miles, according to coaches Mike Evele and Doug Hepfer. It skyrocketed past the team’s previous 100,000-feet record set in June. The RoboDawgs started with just one robotics team in 1998, but they've grown to support more than 30 teams at public schools in Grandville, Mich. (Kyle Moroney / AP) Back to slideshow navigation
  3. Spacemen at work

    Russian cosmonauts Oleg Kotov, right, and Sergey Ryazanskiy perform maintenance on the International Space Station on Jan. 27. During the six-hour, eight-minute spacewalk, Kotov and Ryazanskiy completed the installation of a pair of high-fidelity cameras that experienced connectivity issues during a Dec. 27 spacewalk. The cosmonauts also retrieved scientific gear outside the station's Russian segment. (NASA) Back to slideshow navigation
  4. Special delivery

    The International Space Station's Canadian-built robotic arm moves toward Orbital Sciences Corp.'s Cygnus autonomous cargo craft as it approaches the station for a Jan. 12 delivery. The mountains below are the southwestern Alps. (NASA) Back to slideshow navigation
  5. Accidental art

    A piece of art? A time-lapse photo? A flickering light show? At first glance, this image looks nothing like the images we're used to seeing from the Hubble Space Telescope. But it's a genuine Hubble frame that was released on Jan. 27. Hubble's team suspects that the telescope's Fine Guidance System locked onto a bad guide star, potentially a double star or binary. This caused an error in the tracking system, resulting in a remarkable picture of brightly colored stellar streaks. The prominent red streaks are from stars in the globular cluster NGC 288. (NASA / ESA) Back to slideshow navigation
  6. Supersonic test flight

    A camera looking back over Virgin Galactic's SpaceShipTwo's fuselage shows the rocket burn with a Mojave Desert vista in the background during a test flight of the rocket plane on Jan. 10. Cameras were mounted on the exterior of SpaceShipTwo as well as its carrier airplane, WhiteKnightTwo, to monitor the rocket engine's performance. The test was aimed at setting the stage for honest-to-goodness flights into outer space later this year, and eventual commercial space tours.

    More about SpaceShipTwo on PhotoBlog (Virgin Galactic) Back to slideshow navigation
  7. Red lagoon

    The VLT Survey Telescope at the European Southern Observatory's Paranal Observatory in Chile captured this richly detailed new image of the Lagoon Nebula, released on Jan. 22. This giant cloud of gas and dust is creating intensely bright young stars, and is home to young stellar clusters. This image is a tiny part of just one of 11 public surveys of the sky now in progress using ESO telescopes. (ESO/VPHAS team) Back to slideshow navigation
  8. Fire on the mountain

    This image provided by NASA shows a satellite view of smoke from the Colby Fire, taken by the Multi-angle Imaging SpectroRadiometer aboard NASA's Terra spacecraft as it passed over Southern California on Jan. 16. The fire burned more than 1,863 acres and forced the evacuation of 3,700 people. (NASA via AP) Back to slideshow navigation
  9. Where stars are born

    An image captured by NASA's Spitzer Space Telescope shows the Orion Nebula, an immense stellar nursery some 1,500 light-years away. This false-color infrared view, released on Jan. 15, spans about 40 light-years across the region. The brightest portion of the nebula is centered on Orion's young, massive, hot stars, known as the Trapezium Cluster. But Spitzer also can detect stars still in the process of formation, seen here in red hues. (NASA / JPL-Caltech) Back to slideshow navigation
  10. Cygnus takes flight

    Orbital Sciences Corp.'s Antares rocket rises from NASA's Wallops Flight Facility on Wallops Island, Va, on Jan. 9. The rocket sent Orbital's Cygnus cargo capsule on its first official resupply mission to the International Space Station. (Chris Perry / NASA) Back to slideshow navigation
  11. A long, long time ago...

    This long-exposure picture from the Hubble Space Telescope, released Jan. 8, is the deepest image ever made of any cluster of galaxies. The cluster known as Abell 2744 appears in the foreground. It contains several hundred galaxies as they looked 3.5 billion years ago. Abell 2744 acts as a gravitational lens to warp space, brightening and magnifying images of nearly 3,000 distant background galaxies. The more distant galaxies appear as they did more than 12 billion years ago, not long after the Big Bang. (NASA / NASA via AFP - Getty Images) Back to slideshow navigation
  12. Frosty halo

    Sun dogs are bright spots that appear in the sky around the sun when light is refracted through ice crystals in the atmosphere. These sun dogs appeared on Jan. 5 amid brutally cold temperatures along Highway 83, north of Bismarck, N.D. The temperature was about 22 degrees below zero Fahrenheit, with a 50-below-zero wind chill.

    Slideshow: The Year in Space (Brian Peterson / The Bismarck Tribune via AP) Back to slideshow navigation
  1. Editor's note:
    This image contains graphic content that some viewers may find disturbing.

    Click to view the image, or use the buttons above to navigate away.

  2. Editor's note:
    This image contains graphic content that some viewers may find disturbing.

    Click to view the image, or use the buttons above to navigate away.

  3. Editor's note:
    This image contains graphic content that some viewers may find disturbing.

    Click to view the image, or use the buttons above to navigate away.

  4. Editor's note:
    This image contains graphic content that some viewers may find disturbing.

    Click to view the image, or use the buttons above to navigate away.

Discuss:

Discussion comments

,

Most active discussions

  1. votes comments
  2. votes comments
  3. votes comments
  4. votes comments

More on TODAY.com

  1. Doomed South Korean ferry’s captain taken into custody

    The captain of the sunken ferry in South Korea was taken into custody Friday and is facing five charges, including criminal negligence.

    4/18/2014 8:35:55 PM +00:00 2014-04-18T20:35:55
  2. Did South Korea ferry’s sharp turn cause it to sink?
  3. Teen ferry survivors comforted in devastated town
  1. Courtesy of Shawn Stock

    'You helped me': After 23 years, Desert Storm veteran thanks pen pals

    4/18/2014 8:51:52 PM +00:00 2014-04-18T20:51:52
  1. Dylan Dreyer / TODAY

    The gang is back together! Prove you’re a big fan of Weekend TODAY

    4/19/2014 11:14:33 AM +00:00 2014-04-19T11:14:33
TODAY's Takeaway
  1. TODAY

    Savannah overshares; Billy Crystal brings ‘700 Sundays’ to TV

    4/18/2014 8:29:08 PM +00:00 2014-04-18T20:29:08