Data Set Information
DATA_SET_NAME ASTEROID LIGHTCURVE DERIVED DATA V9.0
DATA_SET_ID EAR-A-5-DDR-DERIVED-LIGHTCURVE-V9.0
NSSDC_DATA_SET_ID NULL
DATA_SET_TERSE_DESCRIPTION A compilation of published rotational parameters derived from lightcurve data for asteroids, through March 2007.
DATA_SET_DESCRIPTION
Data Set Overview
  =================
  This is a compilation of published rotational parameters for
  lightcurve data on asteroids, through March 2007.  These data files
  are provided by Alan Harris and Brian D. Warner, Space Science
  Institute, and Petr Pravec, Astronomical Institute, Czech Republic.
 
  The compilation is originally based on that published in
  [LAGERKVISTETAL1988]:
 
  Lagerkvist, C.-I., A.W. Harris, and V. Zappala 1988.  Asteroid
  lightcurve parameters.  In 'Asteroids II', Binzel, R.P., T.
  Gehrels, and M.S. Matthews, Eds.  (University of Arizona Press:
  Tucson) p. 1162, 1988.
 
  Parameters
  ==========
 
  The data files included are listed here with a description of their
  contents.
 
  lcsummary.tab -
  The summary file includes one entry for each asteroid for which
  lightcurve observations have been made.  Each entry gives the
  following parameters: rotation period; minimum and maximum
  amplitude of lightcurve; reliability code; and a flag for binarity.
  These paramters are selected as the best values known from the
  published literature.
 
  lcdetails.tab -
  The details file includes one entry for each publication of asteroid
  lightcurve results, with the same parameters as in the summary file
  but extracted from the individual publications.  There is a
  reference code referring to the publications list
  (lc_references.tab).
 
  lc_ambiguous.tab -
  A list of asteroids with ambiguous periods, giving the additional
  periods as reported in the original papers.
 
  lc_binary.tab -
  A list of asteroids known or suspected to be binary, along with the
  reported primary and secondary periods and amplitudes.  Primary and
  secondary periods correspond with the rotation period of the primary
  and the orbital period of the binary.  Note that not all binaries
  listed are based on lightcurve studies, the list also includes AO
  and radar studies.
 
  lc_npa.tab -
  A list of asteroids for which non-principal-axis (NPA) data have
  been reported, along with the reported primary and secondary periods
  and amplitudes.
 
  lc_spinaxis.tab -
  A list of asteroids for which spin axis data have been reported,
  along with the reported periods and amplitudes, the ecliptic
  longitude and latitude of up to four spin axis solutions, sidereal
  period of the spin axis solution, and a flag to indicate whether a
  shape model has been derived.
 
  lc_references.tab -
  This file includes the complete citation for each reference cited in
  the data files.
 
 
  Modification History
  ====================
  The lc data set was first introduced into PDS at the April 1994
  asteroid datasets review.  It was subsequently updated at the March
  1996 review, the April 1999 review, the May 2002 review, the
  May 2004 review, and the June 2005 review.  Updates consist of
  adding information published or released since the last update.
 
  At the May 2002 review of version 5.0, it was decided to separate
  the reference number listings, which were becoming long, from the
  main data table. The lccross.tab file was created to provide the
  cross-listing information between objects and references. The
  reference list in the main data file was replaced with a single
  number indicating the total number of references for each object.
 
  For the May 2007 review, the compilers of this data set (Harris,
  Warner, and Pravec) had loaded the data into a database and were
  able to provide the data files in a slightly updated and more
  uniform format.  The lcscross.tab crosslisting file is no longer
  needed, since each line in lcdetails.tab is tied to its appropriate
  reference through the lc_references.tab file.  The entries in the
  other data files, with the exception of lcdetails.tab, also each
  cite a specific reference in lc_references.tab.
DATA_SET_RELEASE_DATE 2007-05-24T00:00:00.000Z
START_TIME 1913-01-01T12:00:00.000Z
STOP_TIME 2007-04-02T12:00:00.000Z
MISSION_NAME SUPPORT ARCHIVES
MISSION_START_DATE 2004-03-22T12:00:00.000Z
MISSION_STOP_DATE N/A (ongoing)
TARGET_NAME ASTEROID
TARGET_TYPE ASTEROID
INSTRUMENT_HOST_ID PUBLIT
INSTRUMENT_NAME COMPILATION
INSTRUMENT_ID COMPIL
INSTRUMENT_TYPE UNKNOWN
NODE_NAME Small Bodies
ARCHIVE_STATUS SUPERSEDED
CONFIDENCE_LEVEL_NOTE
Confidence Level Overview
  =========================
  The confidence level of each entry in the data set is indicated by
  a quality code.  This quality code is described in the associated
  data label, 'LCSUMMARY.TAB'.  Fpr further information the user is
  referred to the cited original publications.
CITATION_DESCRIPTION Harris, A.W., Warner, B.D., and Pravec, P., Eds., Asteroid Lightcurve Derived Data V9.0. EAR-A-5-DDR-DERIVED-LIGHTCURVE-V9.0. NASA Planetary Data System, 2007.
ABSTRACT_TEXT This is a compilation of published rotational parameters derived from lightcurve data for asteroids, through March 2007. In addition to reported rotational parameters by individual paper, there is a summary file with the values adopted by Harris, Warner, and Pravec as the most likely correct values for each asteroid. The data set also contains files listing known rotational information on asteroids with ambiguous periods, binary asteroids, 'tumbling' asteroids, and asteroids with measured spin axes.
PRODUCER_FULL_NAME CAROL NEESE
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