Description of the SUBMILLIMETER LIGHTCURVES OF ASTEROIDS  
        bundle V1.0
=========================================================

Bundle Generation Date: 2020-02-28
Peer Review: 2008 Asteroid Review, 2008-06-12                                 
Discipline node: Small Bodies Node


Content description based on the data set catalog file description for the PDS3 version, EAR-A-I0387-3-SUBMMLC-V1.0
===================================================================================================================

Note: for PDS3 data sets migrated to PDS4, the following text is taken
verbatim from the data set description and confidence level note of the
PDS3 data set catalog file. In these cases, some details may not be correct
as a description of the PDS4 bundle.
                                                           
    Thermal lightcurves of seven large asteroids have been observed at        
    870 microns (345 GHz) using the Max Planck Institut fur                   
    Radioastronomie (MPIfR) 19-channel bolometer of the Heinrich-Hertz        
    Submillimeter Telescope.  The asteroids were observed during four         
    observing runs from January 2003 through May 2004.  The results           
    for Vesta have been reported in Chamberlain et al. (2007), and the        
    details of observation and reduction process described in that            
    paper apply to the other asteroids in this data set as well.              
                                                                              
    Fluxes were calibrated with standard millimeter and submillimeter         
    on-sky calibration sources.  Mars and Uranus were primary                 
    calibrators.  Secondary calibrators included planets Saturn and           
    Neptune, and non-planetary calibrators Orion-A, W3(OH), 3C279, and        
    IRC+10216.  Asteroids and calibrators were observed in channel 9          
    (the center channel).                                                     
                                                                              
    The lightcurves in this data set are the final, filtered                  
    lightcurves found by combining data from all rotations available          
    in each epoch.  Note that the 2001 observations of Vesta mentioned        
    in Chamberlain et al. (2007) were relative flux densities only,           
    with no absolute calibration.  Hence the 2001 data are not                
    included in the Vesta lightcurve archived here.  A full discussion        
    of the reduction process may be found in Chamberlain et al.               
    (2007).                                                                   
                                                                              
    The additional file aspect.tab gives the dates and times of the           
    observations and the ranges of heliocentric and geocentric                
    distances, phase angle, and true anomaly for the observations.            
                                                                              
    References                                                                
    ==========                                                                
                                                                              
    Chamberlain, M.A., A.J. Lovell, and M.V. Sykes, Submillimeter             
    lightcurves of Vesta, Icarus 192, 448-459, 2007.


Known issues or problems with the data
======================================

    The data coverage available in each epoch is limited.  Errors are         
    estimated for each data point with contributions from the                 
    uncertainties in the sky and sky-plus-object integrations,                
    transparency of the atmosphere, and counts-to-Jansky value from           
    observations of on-sky calibrators.  A full discussion of the             
    limitations of the data set may be found in Chamberlain et al.            
    (2007).

PDS3 Source
===========

Version 1.0 of this bundle was migrated from version 1.0 of the PDS3 data set EAR-A-I0387-3-SUBMMLC-V1.0.