On the revision of radiometric albedos and diameters of asteroids

被引:94
作者
Harris, AW [1 ]
Harris, AW [1 ]
机构
[1] CALTECH, JET PROP LAB, PASADENA, CA 91109 USA
基金
美国国家航空航天局;
关键词
D O I
10.1006/icar.1996.5664
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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. (C) 1997 Academic Press.
引用
收藏
页码:450 / 454
页数:5
相关论文
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