Published in

Elsevier, Icarus, 2(209), p. 542-555

DOI: 10.1016/j.icarus.2010.04.003

Links

Tools

Export citation

Search in Google Scholar

A three-parameter magnitude phase function for asteroids

Journal article published in 2010 by Karri Muinonen ORCID, Irina N. Belskaya, Alberto Cellino ORCID, Marco Delbò, Anny-Chantal Levasseur-Regourd, Antti Penttilä, Edward F. Tedesco
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Red circle
Postprint: archiving forbidden
Red circle
Published version: archiving forbidden
Policy details
Data provided by SHERPA/RoMEO

Abstract

We develop a three-parameter H, G1, G2 magnitude phase function for asteroids starting from the current two-parameter H, G phase function. We describe stochastic optimization of the basis functions of the magnitude phase function based on a carefully chosen set of asteroid photometric observations covering the principal types of phase dependencies. We then illustrate the magnitude phase function with a chosen set of observations. It is shown that the H, G1, G2 phase function systematically improves fits to the existing data and considerably so, warranting the utilization of three parameters instead of two. With the help of the linear three-parameter phase function, we derive a nonlinear two-parameter H, G12 phase function, and demonstrate its applicability in predicting phase dependencies based on small numbers of observations.