An Asteroidal Study of the Spitzer COSMOS 24-micron Deep Field

Details An Asteroidal Study of the Spitzer COSMOS 24-micron Deep Field An Asteroidal Study of the Spitzer COSMOS 24-micron Deep Field

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.5919b&link_type=abstract

American Astronomical Society, DPS meeting #38, #59.19; Bulletin of the American Astronomical Society, Vol. 38, p.596

Astronomy and Astrophysics

Astronomy

Scientific paper

The Spitzer Space Telescope General Observer COSMOS program provides a unique opportunity to examine the size distributions and physical properties of smaller, darker asteroids. Although this program is designed as an extragalactic survey, the preliminary "MIPS-deep ” component of sensitive to point sources as faint as 70 μJy at 24 μm, corresponding to diameters of a few tens of meters. The data have been taken near βEcliptic 9o over a period of 52 hours, reobserving a 20’ x 30’ field fifteen times. The high number of exposures taken by S-COSMOS allows for the identification of slow-moving outer solar system small bodies as well as Main Belt Asteroids. We present numbers counts and photometric measurements in the context of apparent motion, or heliocentric distance. More than 60 moving sources have been identified, and fewer than 20% of these sources correspond to previously known asteroids in the JPL/Horizons database.

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