Data Set Information
DATA_SET_NAME ASTEROID LIGHTCURVE DERIVED DATA V13.0
DATA_SET_ID EAR-A-5-DDR-DERIVED-LIGHTCURVE-V13.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : This is a compilation of published rotational parameters for lightcurve data on asteroids, based on the Warner et al. (2009) Asteroid Lightcurve Database. This is the version released on Mar. 28, 2012. These data files are provided by Alan Harris (MoreData!), Brian D. Warner (Palmer Divide Observatory/MoreData!), and Petr Pravec, (Astronomical Institute, Czech Republic). The compilation is originally based on that published in Lagerkvist et al. (1989). 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 parameters 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_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 adaptive optics and radar studies. Additional information on binary asteroids may be found in another PDS data set, the Binary Minor Planets Summary, EAR-A-COMPIL-5-BINMP-V5.0. 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_references.tab - This file includes the complete citation for each reference cited in the data files. It also contains the BibCode of the reference. lc_spinaxis.tab - A list of asteroids for which spin axis determinations have been published. Includes published pole solutions plus a synthesis entry for each asteroid. Amplitudes quoted in these files are the difference between maximum and minimum light, with some accounting for noise in the data. Documentation : The file readme.asc, included in the document directory, contains a description of the data files and how they were compiled. The readme file was released with the full distribution of the Asteroid Lightcurve Database, including a few files not included in the PDS archive. The Ambiguous Periods file was removed by the 2008 PDS review panel on the grounds that it is of marginal utility. The detailed binary asteroid files maintained by Petr Pravec, although part of the Asteroid Lightcurve Database, have not been supplied to us and are thus not included. 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 also each cite a specific reference in lc_references.tab. The data set was subsequently updated in 2008 with the addition of data published through February 2008. In the 2008 version the spin axis compilation was removed from the data set because it is a subset of the spin axis compilation of Kryszczynska which is included in a separate data set. The ambiguous periods compilation was also not included because reviewers considered it to have marginal value in the permanent archive. The data set has subsequently been updated in the same form in 2010, 2011, and 2012. In the version of 2011 and subsequent versions, the spinaxis file has been restored because it is more complete than the previously archived spin axis compilation. References : Lagerkvist, C.-I., A.W. Harris, and V. Zappala, Asteroid lightcurve parameters. In 'Asteroids II', Binzel, R.P., T. Gehrels, and M.S. Matthews, Eds. (University of Arizona Press: Tucson) p. 1162, 1989. Warner, B.D., A.W. Harris, and P. Pravec, The asteroid lightcurve database, Icarus 202, 134-146, doi:10.1016/j.icarus.2009.02.003, 2009.
DATA_SET_RELEASE_DATE 2012-05-30T00:00:00.000Z
START_TIME 1913-01-01T12:00:00.000Z
STOP_TIME 2012-03-28T12:00:00.000Z
MISSION_NAME SUPPORT ARCHIVES
MISSION_START_DATE 1965-01-01T12:00:00.000Z
MISSION_STOP_DATE 2015-01-01T12:00:00.000Z
TARGET_NAME ASTEROID
TARGET_TYPE ASTEROID
INSTRUMENT_HOST_ID PUBLIT
INSTRUMENT_NAME COMPILATION
INSTRUMENT_ID COMPIL
INSTRUMENT_TYPE N/A
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, 'lc_summary.lbl'. For further information the user is referred to the cited original publications. As noted in Warner et al. (2009, Icarus 202, 134-146), only those objects with a U code of 2- or greater in the LC_SUMMARY file, i.e., U : 2-, 2, 2+, 3-, or 3, should be used for rotational rate studies and, unless there is a specific reason otherwise, the summary line period should be used instead of one of the periods in the details table.
CITATION_DESCRIPTION Harris, A.W., Warner, B.D., and Pravec, P., Eds., Asteroid Lightcurve Derived Data V13.0. EAR-A-5-DDR-DERIVED-LIGHTCURVE-V13.0. NASA Planetary Data System, 2012.
ABSTRACT_TEXT This is a compilation of published rotational parameters derived from lightcurve data for asteroids, based on the Warner et al. (2009) Asteroid Lightcurve Database. This is the version released in March 2012. 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 binary asteroids and 'tumbling' asteroids.
PRODUCER_FULL_NAME CAROL NEESE
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