Data Set Overview : 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.

Confidence Level Overview : 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).