I Spy a Little Asteroid With My Infrared Eye
Sig14 016

Credit: NASA/JPL-Caltech/Northern Arizona University/SAO

Observation • June 19th, 2014 • sig14-016


This image of asteroid 2011 MD was taken by NASA's Spitzer Space Telescope in Feb. 2014, over a period of 20 hours. The long observation, taken in infrared light, was needed to pick up the faint signature of the small asteroid (center of frame). The Spitzer observations helped narrow down the size of the space rock to roughly 20 feet (6 meters), making it one of a few candidates for NASA's proposed Asteroid Redirect Mission for which sizes are approximately known.

This image was taken by Spitzer's Infrared Array Camera at a wavelength of 4.5 microns.

About the Object

2011 MD
Interplanetary Body > Asteroid

Color Mapping

Band Wavelength Telescope
Infrared 4.5 ┬Ám Spitzer IRAC