Categories: Asteroids

First Radar Observations of Asteroid 2012 DA14

The Jet Propulsion Laboratory has released an initial view of radar observations of asteroid 2012 DA14 generated from data obtained by NASA’s Goldstone Solar System Radar, taken on Feb. 15-16, 2013 as the asteroid headed away from Earth. While these first radar data aren’t very picturesque, they do reveal one obvious thing: this asteroid is tumbler.

The movie is comprised of 73 radar “images” looped nine times. JPL said that during the observations, the space rock’s distance increased from 120,000 to 314,000 km (74,000 to 195,000 miles) from Earth. The resolution here is 4 meters per pixel.

The images span close to eight hours and clearly show an elongated object undergoing roughly one full rotation. JPL said the images suggest that the asteroid has a long axis of about 40 meters (130 feet). The radar observations were led by scientists Lance Benner and Marina Brozovic of JPL. Additional Goldstone radar observations were taken as the asteroid continued to move away from Earth, on February 18, 19, with more observations scheduled on the 20th.

Radar is one of the best techniques for studying an asteroid’s size, shape, rotation state, surface features and surface roughness, and for improving calculations of its orbit. 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.

Source: JPL

Nancy Atkinson

Nancy has been with Universe Today since 2004, and has published over 6,000 articles on space exploration, astronomy, science and technology. She is the author of two books: "Eight Years to the Moon: the History of the Apollo Missions," (2019) which shares the stories of 60 engineers and scientists who worked behind the scenes to make landing on the Moon possible; and "Incredible Stories from Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos" (2016) tells the stories of those who work on NASA's robotic missions to explore the Solar System and beyond. Follow Nancy on Twitter at and and Instagram at and

Recent Posts

Impacts From Interstellar Objects Should Leave Very Distinct Craters

In a recent study submitted to Earth and Planetary Astrophysics, a team of researchers from…

37 mins ago

Here’s a Sneak Preview of What It’ll Look Like When the Milky Way and Andromeda Galaxies Collide

When big spiral galaxies collide, they don't end up as one really big spiral. Instead,…

3 hours ago

The Youngest Exoplanet Ever Seen?

Using the Atacama Large Millimeter/submillimeter Array (ALMA) have observed what could be the youngest exoplanet…

4 hours ago

Even a Cyclical Universe Needed to Come From Somewhere

The cyclic universe model proposes a universe with no beginning, but a new study shows…

11 hours ago

SpaceX Super Heavy Fires Just one of its Engines. Imagine What it’ll be Like When it Fires all 33

Musk just tweeted an image of the BN7 Super Heavy Booster successfully conducting a static…

1 day ago

Hazegrayart Shows how Rocket Lab's Reusable Neutron Rocket Could Work

A new animation shows what Rocket Lab's totally-reusable rocket will look like when it starts…

1 day ago