Based on Spitzer Space Telescope observations, we derived diameter and albedo estimates for 2132 asteroids in near-Earth space - the largest dataset of its kind. Our results and data are available online.

We observed two very small asteroids with the Spitzer Space Telescope to actually measure their physical properties for the first time. The constraints that we were able to place on their properties do not agree with the standard picture of small asteroids.

Near-Earth asteroid Don Quixote has long since been considered a good candidate for an inactive comet nucleus due to its comet-like orbit. Since its discovery in 1983, comet-like has never been observed - until we observed this object with the Spitzer Space Telescope…