PDS_VERSION_ID = PDS3 OBJECT = DATA_SET DATA_SET_ID = "EAR-A-5-DDR-ASTEROID-SPIN-VECTORS-V3.0" OBJECT = DATA_SET_INFORMATION DATA_SET_NAME = "ASTEROID SPIN VECTORS V3.0" DATA_SET_COLLECTION_MEMBER_FLG = "N" DATA_OBJECT_TYPE = TABLE START_TIME = 1932 STOP_TIME = 1995 DATA_SET_RELEASE_DATE = 1996-03-29 /* Peer Review Date */ PRODUCER_FULL_NAME = "Carol Neese" DATA_PROVIDER_FULL_NAME = "Per Magnusson" DATA_SET_UPDATE_PERIOD = 1.0 DETAILED_CATALOG_FLAG = "N" DATA_SET_DESC = " Data Set Overview ================= This is a tabulation of determinations of asteroid pole orientations gathered from the literature from 1932 through 1995. It is an updated (Dec. 1995) version of the tabulation given in Magnusson (1989) in the Asteroids II book. For more information about the Uppsala Asteroid Database, of which this collection is a part, see Magnusson et al. 1993 (reference given below). Modification History ==================== This data set was first introduced into PDS under the name 'pole' at the April 1994 asteroid datasets review. It was updated under the name 'pole' at the March 1995 review. It has now been updated under the new name 'spin' at the March 1996 review. An update consists in adding data on asteroid spin vectors which have been published since the last update. Parameters ========== The data table 'spin.tab' contains an entry for each published determination of asteroid spin, plus an additional synthesis entry for each asteroid for which such a synthesis is warranted. Each entry has fields for the following parameters. Asteroid catalog number, a code for the type of data used to make the determination, four solutions for the asteroid spin direction (including rejection flag and pole latitude and longitude), sidereal period, flag for shape model, axial ratios, reference code, and notes. Processing ========== The data have been taken from the published literature and no additional processing has been applied. Data ==== The data are included in a single ASCII data table, 'spin.tab'. Ancillary Data ============== The data set also includes a table of full references to the original papers in which the data was published. The references file is 'spinref.tab'. Each entry in the data table includes a pointer to the reference file giving the reference of the original paper for that entry. Media/Format ============ This data set is released in the form of ASCII files which may be stored on disk or other magnetic medium and which may be distributed by ftp, email, real-time access by remote login, or by whatever means is most convenient. " CONFIDENCE_LEVEL_NOTE = " Confidence Level Overview ========================= This is a comprehensive tabulation of determinations of asteroid pole orientations and senses of rotation. No weeding out of vague or uncertain results has been made. Review ====== This data set underwent formal external review on March 29, 1996. Data Coverage and Quality ========================= The data set includes data on asteroid pole directions published through 1995. Supplementary information on shape models, albedo models, and sidereal period is included, but this data set is not intended to be a comprehensive compilation of those parameters. For some asteroids, a large number of independent solutions have been published, which may not be in agreement with one another. The data set compiler, Per Magnussen, has provided also a synthesis entry where possible. The synthesis entry is estimated to have an accuracy in the spin vector of 10 degrees or less. They were obtained by taking averages of the most recent independent results, with weights based on the method used and the amount and type of the input data. This procedure is necessarily somewhat subjective and cannot replace a careful evaluation of the original results. Limitations =========== This data set is intended only to collect data reported in the published literature on asteroid pole directions. " END_OBJECT = DATA_SET_INFORMATION OBJECT = DATA_SET_TARGET TARGET_NAME = ASTEROID END_OBJECT = DATA_SET_TARGET OBJECT = DATA_SET_HOST INSTRUMENT_HOST_ID = "N/A" INSTRUMENT_ID = "N/A" END_OBJECT = DATA_SET_HOST OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "MAGNUSSONETAL1993" END_OBJECT = DATA_SET_REFERENCE_INFORMATION END_OBJECT = DATA_SET OBJECT = REFERENCE REFERENCE_KEY_ID = "MAGNUSSONETAL1993" REFERENCE_DESC = "Magnusson, P., C.-I. Lagerkvist, M. Dahlgren, A. Erikson, M. A. Barucci, I. Belskaya, and M. T. Capria 1993. The Uppsala Asteroid Data Base. In Asteroids, Comets, Meteors 1993, A. Milani, M. Di Martino and A. Cellini, Eds. (Kluwer Academic Publishers, Dordrecht) pp. 471-476." END_OBJECT = REFERENCE END