Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21443505k&link_type=abstract
American Astronomical Society, AAS Meeting #214, #435.05; Bulletin of the American Astronomical Society, Vol. 41, p.707
Astronomy and Astrophysics
Astronomy
Scientific paper
The survey include 104 objects in the range r=18-21 and proper motions 1.3 to 18 degrees per day. Simulations show that virtually all objects are nearby members of the NEO population and have magnitudes in the range H=22-26, characteristic of Earth impactors in the 1-100 Megaton range. The cumulative number of objects to H=25 is 3-4x10^5, well below power-law extrapolations from brighter objects but in-line with more recent population estimates. The median color is midway between that for main-belt C and S types.
Gray James
Ivezic Zeljko
Kent Stephen M.
Knapp Jill
Quinn Terry
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