On the Revision of Radiometric Albedos and Diameters of Asteroids

Details On the Revision of Radiometric Albedos and Diameters of Asteroids On the Revision of Radiometric Albedos and Diameters of Asteroids

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997icar..126..450h&link_type=abstract

Icarus, Volume 126, Issue 2, pp. 450-454.

Computer Science

30

Scientific paper

A simple, approximate method is presented for the recalculation of asteroid diameters and geometric albedos given new, improved absolute visual magnitudes. This method avoids recourse to detailed models of an object's reflected and thermally emitted flux components. Its basis is the assumption that for small changes in absolute magnitude the quantity (1 - A_V)D^2 can be considered invariant, where A_V and D are the object's Bond albedo and diameter, respectively. The usefulness of the method for revising the diameters and albedos of asteroids, especially those covered by the IRAS Minor Planet Survey (E. F. Tedesco, Ed., 1992, Tech. Rep. PL-TR-92-2049, Phillips Laboratory, Hanscom AFB, MA), is demonstrated by applying it to a number of objects for which recently updated absolute magnitudes are available.

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