These first radar images of 2015 TB145 from the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico, indicate the near-Earth object is spherical in shape and approximately 2,000 feet (600 meters) in diameter.
The asteroid Euphrosyne glides across a field of background stars in this time-lapse view from NASA's WISE spacecraft. Euphrosyne is quite dark in visible light, but glows brightly at infrared wavelengths.
Scientists using two giant, Earth-based radio telescopes bounced radar signals off passing asteroid 2011 UW158 to create images for an animation showing the rocky body's fast rotation. This is a frame from the animation.
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. The indicated times are in Universal Time.
Asteroid 2014 DX110 Flyby of Earth on March 5, 2014
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.
This sequence of radar images of asteroid 2013 ET was obtained on Mar. 10, 2013, by NASA scientists using the 230-foot (70-meter) DSN antenna at Goldstone, CA, when the asteroid was about 693,000 mi (1.1 million km) from Earth.
This set of images from the La Sagra Sky Survey, operated by the Astronomical Observatory of Mallorca in Spain, shows the passage of asteroid 2012 DA14 shortly after its closest, and safe, approach to Earth.
Asteroid 2012 DA14 as Seen from Siding Spring, Australia
An animated set of images, from the telescope known as the iTelescope.net Siding Spring Observatory, shows asteroid 2012 DA14 as the streak moving from top to bottom in the field of view. The animation is available in the Planetary Photojournal.
Gingin Observatory Spots Near-Earth Asteroid at Closest Approach
This frame from a movie shows the asteroid 2012 DA14 flying safely by Earth, as seen by the Gingin Observatory in Australia around the time of its closest approach, 11:24:42 a.m. PST (2:24:42 p. The animation is available in the Planetary Photojournal.
Approach of Asteroid 2012 DA14 from Samford Valley Observatory
This frame from a movie from the Samford Valley Observatory in Brisbane, Australia, shows the progress of asteroid 2012 DA14 across the night sky as it nears its closest approach. It was taken at 12:59 UTC on Feb. 15 (7:59 a.m. EST, or 4:59 a.m. PST).
This image of asteroid Toutatis was generated with data collected using NASA's Deep Space Network antenna at Goldstone, Calif., on Dec. 12 and 13, 2012 and indicates that it is an elongated, irregularly shaped object with ridges and perhaps craters.