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This graphic depicts the passage of asteroid 2014 RC past Earth on September 7, 2014. At time of closest approach, the space rock will be about one-tenth the distance from Earth to the moon. Times indicated on the graphic are Universal Time.  Image credit: NASA/JPL-Caltech Reports of Meteorite Strike in Nicaragua and a Size Update for Asteroid 2014 RC
September 8, 2014
Updated: September 11, 2014

Small meteorite impact reported in Nicaragua is unrelated to Asteroid 2014 RC. 2014 RC has a rotation rate of 15.8 seconds - the fastest rotating asteroid ever observed.

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This graphic depicts the passage of asteroid 2014 RC past Earth on September 7, 2014. At time of closest approach, the space rock will be about one-tenth the distance from Earth to the moon. Times indicated on the graphic are Universal Time.  Image credit: NASA/JPL-Caltech Small Asteroid to Pass Close by Earth on Sunday (2014 RC)
September 3, 2014

A small asteroid, designated 2014 RC, will safely pass very close to the Earth on Sunday, 7 September 2014. From its brightness, astronomers estimate that the asteroid is about 20 meters (60 feet) in size

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Observations from NASA's Spitzer Space Telescope reveal new information about the structure of 2011 MD, a small asteroid being considered by NASA for its proposed Asteroid Redirect Mission, or ARM. Image credit: NASA/JPL-Caltech NASA Announces Latest Progress in Hunt for Asteroids
June 19, 2014

Agency officials announced on Thursday, June 19, recent progress to identify candidate asteroids for its Asteroid Redirect Mission (ARM), increase public participation in the search for asteroids, and advance the mission's design.

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NASA scientists used Earth-based radar to produce these sharp views - an image montage and a movie sequence -- of the asteroid designated '2014 HQ124' on June 8, 2014. Image Credit: NASA/JPL-Caltech/Arecibo Observatory/USRA/NSF
Giant Telescopes Pair Up to Image Near-Earth Asteroid
June 12, 2014

NASA scientists using Earth-based radar have produced sharp views of a recently discovered asteroid 2014 HQ124 as it slid silently past our planet. The new views are some of the most detailed radar images of a near-Earth asteroid ever obtained.

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This diagram shows the orbit of asteroid 2014 HQ124, and its location relative to Earth on June 8. Image Credit: NASA/JPL-Caltech
Asteroid Discovered by NASA to Pass Earth Safely
June 6, 2014

A large newfound asteroid - 2014 HQ124 - will safely pass Earth on June 8 from a distance of about 777,000 miles (1.25 million kilometers), more than three times farther away than our moon.

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SERVI Logo Asteroid Grand Challenge: Virtual Seminar Series

NASA is sponsoring a series of virtual seminars on the properties of Near Earth Asteroids (NEAs) and what is being done to learn more about the hazards and the opportunities they may pose for us here on Earth.

  • Feb 14 - David Morrison (NASA Ames & SSERVI)
    History of impacts research and planetary defense

  • Feb 28 - Lindley Johnson (NASA Headquarters)
    NASA's NEA programs

  • Mar 14 - Paul Chodas (NEO Program Office at JPL)
    NEA discovery, orbit calculation and impact probability assessment

  • Mar 28 - Alan Harris (JPL retired)
    NEA populations and impact frequency

  • Apr 11 - Dan Britt (University of Central Florida)
    Physical properties of NEAs

  • Apr 25 - David Kring (Lunar and Planetary Institute)
    Examples and consequences of NEA impacts

  • May 9 - Tim Spahr (Minor Planet Center, CFA)
    MPC and the International Warning Network

  • May 23 - Dan Mazanek (NASA Langley)
    NEA deflection strategies

Seminars Link


Orbital plot of 2007 VK184
Asteroid 2007 VK184 Eliminated as Impact Risk to Earth
April 2, 2014

Recent observations have removed from NASA's asteroid impact hazard list the near-Earth object (NEO) known to pose the most significant risk of Earth impact over the next 100 years.

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This graphic depicts the passage of asteroid 2014 EC past Earth on March 6, 2014. The asteroid's closest approach is a distance equivalent to about one-sixth of the distance between Earth and the moon. Times indicated on the graphic are Universal Time. A time near closest approach, 2200 Universal Time, is 2 p.m. PST (5 p.m. EST). Image Credit: NASA/JPL-Caltech
Small Asteroid 2014 EC Will Pass Earth Safely on March 6
March 6, 2014

An asteroid about 25 feet (8 meters) across will safely pass Earth at about 1:21 p.m. PST (4:21 p.m. EST) today, March 6, approaching us six times closer than the moon.

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This graphic depicts the passage of asteroid 2014 DX110 past Earth on March 5, 2014. The asteroid's closest approach was at a distance equivalent to about nine-tenths of the distance between Earth and the moon. Times indicated on the graphic are Universal Time. A time near closest approach, 2200 Universal Time, is 2 p.m. PST. Image credit: NASA/JPL-Caltech
Asteroid 2014 DX110 Will Safely Pass Closer Than Moon on March 5
March 4, 2014

As happens about 20 times a year with current detection capabilities, a known asteroid will safely pass Earth Wednesday closer than the distance from Earth to the moon.

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This image is one frame from a collage of radar images taken on Feb. 11, 2014, of near-Earth asteroid 2006 DP 14, which is about 1,300 feet (400 meters) long. The imaging used the 230-foot (70-meter) Deep Space Network antenna at Goldstone, Calif., while the asteroid was about 11 times farther from Earth than the moon is. Image credit: NASA/JPL-Caltech/GSSR
Radar Images of Near-Earth Asteroid 2006 DP14
February 25, 2014

Radar images of asteroid 2006 DP14 reveal it is a peanut-shaped space rock.

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Asteroid Graphic
NASA to Hold Asteroid Initiative Opportunities Forum
February 24, 2014

As the next step in advancing NASA's asteroid initiative, the agency will host an Opportunities Forum March 26, 2014 at NASA Headquarters in Washington.

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This concept image shows an astronaut preparing to take samples from the captured asteroid after it has been relocated to a stable orbit in the Earth-moon system. Hundreds of rings are affixed to the asteroid capture bag, helping the astronaut carefully navigate the surface.
Responding to Potential Asteroid Redirect Mission Targets
February 14, 2014

NASA is developing an Asteroid Redirect Mission (ARM) -- a first-ever mission to identify, capture and redirect an asteroid to a safe orbit of Earth's moon for future exploration by astronauts in the 2020s.

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The six red dots in this composite picture indicate the location of the first new near-Earth asteroid seen by NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) since the spacecraft came out of hibernation in December 2013.  Image credit: NASA/JPL-Caltech
Recently Reactivated NASA Spacecraft Spots Its First New Asteroid
January 7, 2014

NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) spacecraft has spotted a never-before-seen asteroid -- its first such discovery since coming out of hibernation last year.

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Global map showing possible impact locations of 2014 AA based on Catalina Sky Survey images (blue band), and probable impact location based on infrasound data (red dot).
The First Discovered Asteroid of 2014 Collides With Earth - An Update
January 3, 2014

Several sources confirm that the first discovered asteroid of 2014, designated 2014 AA, entered the Earth's atmosphere late January 1 EST over the mid-Atlantic Ocean.

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This animated GIF shows Asteroid 2014 AA, discovered by the NASA-sponsored Catalina Sky Survey on Jan. 1, 2014, as it moved across the sky. Image credit: CSS/LPL/UA
First Asteroid Discovered in 2014 Has Impact (2014 AA)
January 2, 2014

The first asteroid discovered in 2014 has entered Earth's atmosphere on January 2nd over the ocean off the coast of West Africa.

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This computer graphic depicts the orbit of asteroid 2013 TV135 near Earth
Surprising Recent Discoveries of Three Large Near-Earth Objects
November 5, 2013
Updated November 6, 2013

Two surprisingly large Near-Earth Asteroids have been discovered in just the last week or so, as well as a third moderately large asteroid which surprisingly has also gone undetected until now, even though it can pass close enough to the Earth to be classified as "potentially hazardous".

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This computer graphic depicts the orbit of asteroid 2013 TV135 near Earth
Asteroid 2013 TV135 - A Reality Check
October 17, 2013

Newly discovered asteroid 2013 TV135 made a close approach to Earth on Sept. 16. Estimated to be about 1,300 feet (400 meters) in size, the asteroid has a 1-in 63,000 chance of impacting the Earth in the year 2032. Additional observations are likely to result in a dramatic reduction, or complete elimination, of any risk of Earth impact.

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Artist Rendition of the WISE Spacecraft
WISE Spacecraft Reactivated to Hunt For Asteroids
August 21, 2013

The WISE spacecraft that discovered and characterized tens of thousands of asteroids throughout the solar system before being placed in hibernation will return to service for three more years starting in September, assisting NASA in its effort to identify the population of potentially hazardous near-Earth objects, as well as those suitable for asteroid exploration missions.

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Radar images of Asteroid 2005 WK4 obtained on Aug 8, 2013
Radar Images of Asteroid 2005 WK4
August 15, 2013

A collage of radar images of near-Earth asteroid 2005 WK4 was generated by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, Calif., on Aug. 8, 2013. The asteroid is between 660 and 980 feet (200 and 300 meters) in diameter; it has a rounded and slightly asymmetric shape. As it rotates, a number of features are evident that suggest the presence of some flat regions and a bulge near the equator.

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Asteroid 2013 MZ5 as seen by the University of Hawaii's PanSTARR-1 telescope
Ten Thousandth Near-Earth Object Unearthed in Space
June 24, 2013

More than 10,000 asteroids and comets that can pass near Earth have now been discovered. The 10,000th near-Earth object, asteroid 2013 MZ5, was first detected on the night of June 18, 2013, by the Pan-STARRS-1 telescope.

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This image of asteroid 1998 QE2 was obtained on June 1, 2013, when the asteroid was about 3.75 million miles (6 million kilometers) from Earth. The small white dot at lower right is the moon, or satellite, orbiting asteroid 1998 QE2. Image credit: NASA/JPL-Caltech/GSSR
Radar Movies Highlight Asteroid 1998 QE2 and Its Moon
June 6, 2013

Scientists working with NASA's 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, Calif., have released a second, longer, more refined movie clip of asteroid 1998 QE2 and its moon. The 55 individual images used in the movie were generated from data collected at Goldstone on June 1, 2013.

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First Radar Images of Asteroid 1998 QE2
NASA Radar Reveals Asteroid 1998 QE2 Has Its Own Moon
May 30, 2013

A sequence of radar images of asteroid 1998 QE2 was obtained on the evening of May 29, 2013, by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, Calif., when the asteroid was about 3.75 million miles (6 million kilometers) from Earth, which is 15.6 lunar distances.

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Graphic of Asteroid's Family Shattered Past
NASA's WISE Mission Finds Lost Asteroid Family Members
May 29, 2013

Data from NASA's Wide-field Infrared Survey Explorer (WISE) have led to a new and improved family tree for asteroids in the main belt between Mars and Jupiter. Astronomers used millions of infrared snapshots from the asteroid-hunting portion of the WISE all-sky survey, called NEOWISE, to identify 28 new asteroid families.

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The orbit of asteroid 1998 QE2. Image credit: NASA/JPL-Caltech
Asteroid 1998 QE2 to Sail Past Earth Nine Times Larger Than Cruise Ship
May 15, 2013

On May 31, 2013, asteroid 1998 QE2 will sail serenely past Earth, getting no closer than about 3.6 million miles (5.8 million kilometers), or about 15 times the distance between Earth and the moon.

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Photo of NEOCam Sensor
NASA-Funded Asteroid Tracking Sensor Passes Key Test
April 15, 2013

An infrared sensor that could improve NASA's future detecting and tracking of asteroids and comets has passed a critical design test. The test assessed performance of the Near Earth Object Camera (NEOCam) in an environment that mimicked the temperatures and pressures of deep space. NEOCam is the cornerstone instrument for a proposed new space-based asteroid-hunting telescope.

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This computer graphic depicts the orbit of comet 2013 A1 (Siding Spring) through the inner solar system.
Update: Comet 2013 A1 (Siding Spring) Will Make A Very Close Approach to Mars in October 2014
April 12, 2013

New observations of comet C/2013 A1 (Siding Spring) have allowed NASA's Near-Earth Object Office at the Jet Propulsion Laboratory in Pasadena, Calif. to further refine the comet's orbit. Based on data through April 7, 2013, the latest orbital plot places the comet's closest approach to Mars slightly closer than previous estimates, at about 68,000 miles (110,000 kilometers).

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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
Goldstone Radar Snags Images of Asteroid 2013 ET
March 18, 2013

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.

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This computer graphic depicts the orbit of comet 2013 A1 (Siding Spring) through the inner solar system.
Comet 2013 A1 (Siding Spring) Will Make A Very Close Approach to Mars in October 2014
March 5, 2013

On Oct. 19, 2014, Comet 2013 A1 (Siding Spring) will pass extraordinarily close to Mars, almost certainly within 300,000 km of the planet and possibly much closer. Our current best estimate has it passing about 50,000 km from the surface of Mars. Our current estimate for the impact probability is less than one in six hundred and we expect that future observations will allow us to completely rule out a Mars impact.

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Ground track of impactor showing altitude values along the track
Additional Details on the Large Fireball Event over Russia on Feb. 15, 2013
March 1, 2013

The large fireball observed on the morning of February 15, 2013 in the skies near Chelyabinsk, Russia, was caused by a relatively small asteroid approximately 17 to 20 meters in size, entering the Earth's atmosphere at high speed and a shallow angle. In doing so it released a tremendous amount of energy, fragmented at high altitude, and produced a shower of pieces of various sizes that fell to the ground as meteorites. The fireball was observed not only by video cameras anD LOw frequency infrasound detectors, but also by U.S. Government sensors. As a result, the details of the impact have become clearer.

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Image of Asteroid Apophis Apophis Risk Assessment Updated
February 21, 2013

A recent study has updated the impact hazard assessment for 99942 Apophis, a 325-meter diameter near-Earth asteroid that has been the focus of considerable attention after it was found in December 2004 to have a significant probability of Earth impact in April 2029. While the 2029 potential impact was ruled out within days through the measurement of archival telescope images, the possibility of a potential impact in the years after 2029 continues to prove difficult to rule out.

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Collage of 72 individual radar-generated images of asteroid 2012 
DA14 was created using data from NASA's 230-foot (70-meter) Deep Space 
Network antenna at Goldstone, Calif
NASA Releases Radar Movie of Asteroid 2012 DA14
February 19, 2013

An initial sequence of radar images of asteroid 2012 DA14 was obtained on the night of Feb. 15/16, 2013, by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, Calif. Each of the 72 frames required 320 seconds of data collection by the Goldstone radar.

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Russian Meteor Not Associated With Asteroid 2012 DA14
February 15, 2013

Preliminary information indicates that a meteor in Chelyabinsk, Russia, is not related to asteroid 2012 DA14, which is flying by Earth safely today. The Russia meteor is the largest reported since 1908, when a meteor hit Tunguska, Siberia.

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Diagram depicting the passage of asteroid 2012 DA14 through the Earth-moon system on Feb. 15, 2013
NASA to Chronicle Close Earth Flyby of Asteroid 2012 DA14
February 13, 2013

NASA Television will provide commentary starting at 2 p.m. EST (11 a.m. PST) on Friday, Feb. 15, during the close, but safe, flyby of a small near-Earth asteroid named 2012 DA14.

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Diagram showing Asteroid 2012 DA14's passage by the Earth on February 15, 2013
Asteroid 2012 DA14 To Pass Very Close to the Earth on February 15, 2013
February 1, 2013

The small near-Earth asteroid 2012 DA14 will pass very close to the Earth on February 15, 2013, so close that the asteroid will pass inside the ring of geosynchronous weather and communication s satellites. NASA's NEO Program Office can accurately predict the asteroid's path with the observations obtained, and it is therefore known, there is no chance that the asteroid might be on a collision course with the Earth.

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Image of Asteroid Apophis NASA Rules Out Earth Impact in 2036 for Asteroid Apophis
January 10, 2013

NASA scientists at the agency's Jet Propulsion Laboratory in Pasadena, Calif., effectively have ruled out the possibility the asteroid Aphophis will impact Earth during a close flyby in 2036.

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Graphic showing an astronaut visiting an asteroid New Website Tool Now Available For Identifying Mission-Accessible Near-Earth Asteroids and Their Next Observing Opportunities
March 20, 2012

Observers, mission planners, and other interested users are invited to use a new website tool to view a list of near-Earth asteroids that are among the most accessible for future robotic or human space flight round-trip rendezvous missions

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