University of Virginia research scientist Greg Black, working with astronomers at NASA and other institutions, has captured images of a small asteroid that passed relatively close to Earth on Jan. 29. Astronomers are busily refining their techniques for locating and observing asteroids that could potentially be a threat to our planet. The object Black observed, Asteroid 2007 TU24, is only about 800 feet in diameter considered a very small object, and relatively difficult to locate and image in the vastness of space. The object was discovered only a few months prior to passing within 334,000 miles of Earth (our moon is about 220,000 miles away when at its closest point to Earth).
This radar image of 2007 TU24 was obtained on January 28, 2008, about 12 hours before the asteroid's 1.4-lunar-distance pass by the Earth. The Arecibo Observatory in Puerto Rico and the Greenbank Telescope in West Virginia were used to take this image.
An asteroid up to 600m in length rushed past the Earth this morning, giving astronomers a rare and relatively close-up glimpse of such a large object in near space.
The Arecibo Observatory will have its sights set on a newly discovered asteroid next week as the object, called 2007 TU24, passes within 1.4 lunar distances, or 334,000 miles, from Earth.
+ Larger image These low-resolution radar images of asteroid 2007 TU24 were taken over a few hours by the Goldstone Solar System Radar Telescope in California's Mojave Desert. Image resolution is approximately 20-meters per pixel. Next week, the plan is to have a combination of several telescopes provide higher resolution images. Image credit: NASA/JPL-Caltech + Full resolution (83Kb)
Scientists at NASA's Jet Propulsion Laboratory in Pasadena, Calif., have obtained the first images of asteroid 2007 TU24 using high-resolution radar data. The data indicate the asteroid is somewhat asymmetrical in shape, with a diameter roughly 250 meters (800 feet) in size.