NASA-International Space Station

NASA's Wide-field Infrared Survey Explorer, or WISE, has covered its first never-before-seen near-Earth asteroid, the first of hundreds it is likely to find during its mission to map the whole sky in infrared light.

The near-Earth object, designated 2010 AB78, was revealed by WISE Jan. 12. After the mission's complex software picked out the moving object against a background of stationary stars, researchers followed up and confirmed the discovery with the University of Hawaii's 2.2-meter (88-inch) visible-light telescope near the summit of Mauna Kea

The asteroid is at present about 158 million kilometers (98 million miles) from Earth. It is estimated to be roughly 1 kilometer (0.6 miles) in diameter and circles the sun in an elliptical orbit tilted to the plane of our solar system. The object comes as close to the sun as Earth, but because of its twisted orbit, it is not thought to pass near our planet. This asteroid does not pose any predictable impact threat to Earth, but scientists will continue to monitor it.

WISE, which began its all-sky survey on Jan. 14, is anticipated to find about 100-thousand previously undiscovered asteroids in the Main Belt between Mars and Jupiter, and hundreds of new near-Earth asteroids. It will also spot millions of fresh stars and galaxies.

NASA's Jet Propulsion Laboratory in Pasadena, Calif., manages the WISE for NASA's Science Mission Directorate, Washington. The principal researcher, Edward Wright, is at UCLA. The mission was competitively selected under NASA's Explorers Program managed by the Goddard Space Flight Center, Greenbelt, Md. The science instrument was built by the Space Dynamics Laboratory, Logan, Utah, and the spacecraft was built by Ball Aerospace & Technologies Corp., Boulder, Colo. Science operations and data processing take place at the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena. Caltech manages JPL for NASA. The ground-based observations are partially supported by the National Science Foundation.