Rectified Asteroid Albedos and Diameters from IRAS and MSX Photometry Catalogs

Rectified diameters and albedo estimates of 1517 main-belt asteroids selected from IRAS and the Mid-Course Space Experiment asteroid photometry catalogs are derived from updated infrared thermal models, the Standard Thermal Model and the Near-Earth Asteroid Thermal Model (NEATM), and Monte Carlo sim...

Full description

Saved in:
Bibliographic Details
Published in:The Astronomical journal 2010-10, Vol.140 (4), p.933-943
Main Authors: Ryan, Erin Lee, Woodward, Charles E
Format: Article
Language:English
Subjects:
ALBEDO
ASTEROIDS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CALCULATION METHODS
COMPUTERIZED SIMULATION
ECLIPSE
MONTE CARLO METHOD
PHOTOMETRY
PLANETS
SIMULATION
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Rectified diameters and albedo estimates of 1517 main-belt asteroids selected from IRAS and the Mid-Course Space Experiment asteroid photometry catalogs are derived from updated infrared thermal models, the Standard Thermal Model and the Near-Earth Asteroid Thermal Model (NEATM), and Monte Carlo simulations, using new Minor Planet Center compilations of absolute magnitudes (H values) constrained by occultation- and radar-derived parameters. The NEATM approach produces a more robust estimate of albedos and diameters, yielding albedos of pv (NEATM mean) =0.081 ? 0.064. The asteroid beaming parameter ( Delta *h) for the selected asteroids has a mean value of 1.07 ? 0.27, and the smooth distribution of Delta *h suggests that this parameter is independent of asteroid properties such as composition. No trends in Delta *h due to size-dependent rotation rates are evident. Comparison of derived values of Delta *h as a function of taxonomic type indicates that the beaming parameter values for S- and C-type asteroids are identical within the standard deviation of the population of beaming parameters.
ISSN:1538-3881
0004-6256
1538-3881
DOI:10.1088/0004-6256/140/4/933