Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




IRON AND ICE
Goldstone Radar Snags Images of Asteroid 2013 ET
by Staff Writers
Pasadena CA (JPL) Mar 20, 2013


These radar images of asteroid 2013 ET were obtained when the asteroid was about 693,000 miles (1.1 million kilometers / 2.9 lunar distances) from Earth. Image credit: NASA/JPL-Caltech/GSSR.

A sequence of radar images of asteroid 2013 ET was obtained on March 10, 2013, by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, Calif., when the asteroid was about 693,000 miles (1.1 million kilometers) from Earth, which is 2.9 lunar distances.

The radar imagery suggests the irregularly shaped object is at least 130 feet (40 meters) wide. The 18 radar images were taken over a span of 1.3 hours. During that interval, the asteroid completed only a fraction of one rotation, suggesting that it rotates once every few hours.

The radar observations were led by scientists Marina Brozovic and Lance Benner of NASA's Jet Propulsion Laboratory, Pasadena, Calif.

Radar is a powerful technique for studying an asteroid's size, shape, rotation state, surface features and surface roughness, and for improving the calculation of asteroid orbits. Radar measurements of asteroid distances and velocities often enable computation of asteroid orbits much further into the future than if radar observations weren't available.

NASA detects, tracks and characterizes asteroids and comets passing close to Earth using both ground- and space-based telescopes. The Near-Earth Object Observations Program, commonly called "Spaceguard," discovers these objects, characterizes a subset of them, and plots their orbits to determine if any could be potentially hazardous to our planet.

.


Related Links
Near-Earth Object Program Office at JPL
Asteroid Radar Research at JPL
Asteroid and Comet Mission News, Science and Technology






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





IRON AND ICE
Earth to get another asteroid viewing
Pasadena, Calif. (UPI) Mar 8, 2013
Earth will have a visit by yet another asteroid this weekend but there is no danger of a cosmic collision, NASA says. When the 262-foot-wide asteroid will be about 604,500 miles away when it makes its closest approach to Earth Saturday afternoon said Don Yeomans, a planetary scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "It's a pretty good size, but it's not g ... read more


IRON AND ICE
NASA's LRO Sees GRAIL's Explosive Farewell

Amazon's Bezos recovers Apollo 11 engines

Leaping Lunar Dust

Lunar Orbiter Image Recovery Project Seeks Public Support To Retrieve Apollo Era Moon Images

IRON AND ICE
NASA's next Mars mission invites public to come aboard

ISS Cosmonauts Model Manually Controlled Landing on Mars

Curiosity Mars Rover Sees Trend in Water Presence

NASA Curiosity rover back online after memory glitch

IRON AND ICE
NASA Voyager Status Update on Voyager 1 Location

Voyager 1 has entered a new region of space

NASA denies report that Voyager left solar system

Reproduction In Zero Gravity

IRON AND ICE
Shenzhou 10 - Next Stop: Jiuquan

China's fourth space launch center to be in use in two years

China to launch new manned spacecraft

Woman expected again to join next China crew roster

IRON AND ICE
ESA seeks innovators for orbiting laboratory

New ISS crew prepares for launch

Space crew returns to Earth from ISS

Canadian commands space station for first time

IRON AND ICE
Estonia's student cubesat satellite is ready for the next Vega launch

Vega receives its upper stage as the next mission's two primary passengers land in French Guiana

Grasshopper Successfully Completes 80M Hover Slam

Musk: 'I'd like to die on Mars'

IRON AND ICE
Distant planetary system is a super-sized solar system

Water signature in distant planet shows clues to its formation

The Great Exoplanet Debate

Earth-sized planets in habitable zones are more common than previously thought

IRON AND ICE
NASA Awards Astrotech Contract For SMAP Spacecraft Processing

Videogame power harnessed for positive goals

Europe triples recycling but still lags target

Mobile LIDAR technology expanding rapidly




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement