Data Set Overview
  =================
  The Asteroid Polarimetric Database (APD) is compiled by Dmitrij
  Lupishko of Kharkov University.  This database tabulates the
  original data comprising degree of polarization as a function of
  phase angle of the asteroid, and additional parameters where
  available.  This data set, together with 'polar.tab' containing the
  TRIAD polarimetry, includes most if not all existing asteroid
  polarimetry data published by 1996.  The APD is an ongoing
  compilation and this data set will be updated yearly.
 
 
  Parameters
  ==========
  The parameters tabulated in 'apd.tab' are filter, phase angle,
  degree of polarization, polarization position angle, position angle
  of the scattering plane, and both degree of polarization and
  position angle in the proper coordinate system measured from the
  perpendicular to the scattering plane.
 
 
  Data
  ====
  The Asteroid Polarimetric Database is included in the file
  'apd.tab'.
 
 
  Ancillary Data
  ==============
  Parameters of the polarimetric curve for individual asteroids, as
  well as polarimetric albedos, are compiled in the file
  'apdcurv.tab'.  This file reproduces the data in Table 2 of
  Lupishko and Mohamed (1996) [LUPISHKO&MOHAMED1996].  The full
  references to published papers the data of which are included in
  'apd.tab' are listed in 'apdref.tab'.
 
  Modification History
  --------------------
  This data set was first reviewed and ingested in 1996, and has now
  been updated with additional polarimetric data published since
  then, as well as an added table of derived polarimetric parameters
  including polarization curves and polarimetric albedos of selected
  asteroids.

Confidence Level Overview
  =========================
  This is a compilation of asteroid polarimetry results from the
  published literature.  The user is referred to the individual
  publications for information on the confidence level of any given
  observation.
 
 
  Review
  ======
  This data set underwent external peer review on March 24, 1997.