Data Set Overview
    =================
    This data set reproduces the major data tables of 'The Sizes, Shapes,
    Albedos, and Colors of Cometary Nuclei' (Lamy et al., 2004 in 'Comets
    II').  In this article the authors present a survey of the available
    literature and present what they found to be the most reliable results
    for the various parameters reported.
 
 
    Parameters
    ==========
    Measurements of effective radius, axial ratio and period are presented
    for 153 comets and 34 asteroidal objects suspected of being dormant or
    extinct comet nuclei.  Additional tables present colors, albedos, and
    dimensions of nuclei.
 
 
    Processing
    ==========
    These data have been keyed in to flat ASCII tables from the published
    paper.  The format has been modified slightly to accommodate PDS
    standards, usual SBN practices, and the preferences of users as
    expressed by the external reviewers.
 
    At the peer review for these data, the reviewers recommended removing
    the rotation periods originally included in the main data table (the
    'comet.tab' file).  The rotation period information was apparently
    included as a convenience in the published table, and the data were
    not of the same quality as the rest of the columns.  The column was
    removed before final archiving.  (A separate rotation period dataset
    was recommended for archiving.)
 
    Media/Format
    ============
    These data are available online for immediate downloading.

Confidence Level Overview
    =========================
    Lamy et al. (2004) contains extensive remarks regarding the various
    observations and measurements included in these tables.  While the
    tables present an excellent summary of the state of knowledge, the
    user is strongly encouraged to consult the published paper for the
    various caveats and notations included in the remarks.
 
 
    Review
    ======
    This data set underwent peer review on 12 December 2005.  The data
    were accepted pending some minor corrections, which have been made,
    and the relatively major change noted in the data set description.