Serendipitous JWST/MIRI observations reveal 139 decameter main-belt asteroids, the smallest population sample ever seen there, with a size-frequency break near 100 meters.
Kuiper Belt searches from the Palomar 5-m telescope
1 Pith paper cite this work. Polarity classification is still indexing.
abstract
Motivated by a desire to understand the size distributon of the Kuiper Belt, an observing program was conducted at the Mount Palomar 5-m telescope from 1994-1996. The observations consisted of follow-up observations of known objects (in order to improve their very indeterminate orbits), and deep exposures on a single field to search for small objects below the limiting magnitudes of other surveys. Eighteen object recoveries were successfully obtained over the course of the follow-up program. Data reduction of the deep fields consisted of a software recombination of many fields shifted at different angular rates in order to detect objects at differing heliocentric distances. We set an upper limit of <1 object per 0.05 square degrees in the ecliptic brighter than magnitude R ~ 25. The lack of detected objects in this work serves to help constrain the number density of Kuiper Belt comets.
fields
astro-ph.EP 1years
2025 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
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JWST sighting of decameter main-belt asteroids and view on meteorite sources
Serendipitous JWST/MIRI observations reveal 139 decameter main-belt asteroids, the smallest population sample ever seen there, with a size-frequency break near 100 meters.