Data Set Information
DATA_SET_NAME UBV MEAN ASTEROID COLORS
DATA_SET_ID EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : This is a compilation of mean U-B and B-V color indices of asteroids. This data file was provided by E.F. Tedesco, and is considered to be a preliminary version. This dataset presents Johnson system U-B and B-V colors (or colors transformable to them) for asteroids, obtained between 1951 and 1989 and published through mid-1990. In addition, it uses Ted Bowell's unpublished observations from the Lowell UBV Asteroid Survey. The 978 mean U-B color indices are derived from 3,476 U-B observations. The 1,020 mean B-V color indices are derived from 4,010 B-V observations. The details of this synthesis will be submitted for publication in the future. (Note: As of 2004 this had not yet been published.) For additional information contact Ed Tedesco. Parameters : The data are presented in one ASCII file, 'ubvavg.tab'. The file contains one entry for each asteroid, with fields for the following paramenters. Catalog number of the asteroid, provisional designation (for data published under the provisional designation only), and for both U-B and B-V the mean color index, the standard deviation of the mean color index, the number of observations used to compute the mean value, and the minimum, maximum, and mean phase angles of the asteroid in the set of observations used to compute the mean. Processing : The U-B and B-V values presented here are the unweighted averages of color indices compiled from the published literature. The full dataset including the source data and references will be incorporated into the PDS when the compilation has been published, sometime in the future. The 1.1 and 1.2 versions of the dataset differed from version 1.0 only by changes to this file and the label file. Nothing was changed in the data file.
DATA_SET_RELEASE_DATE 1995-03-31T00:00:00.000Z
START_TIME 1951-01-01T12:00:00.000Z
STOP_TIME 1989-12-31T12:00:00.000Z
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 ARCHIVED
CONFIDENCE_LEVEL_NOTE Confidence Level Overview : Review : This dataset underwent a formal external review on March 31, 1995. Data Coverage and Quality : This dataset includes data published through mid-1990. The complete dataset including source data and references, which will be complete through 1994, may be released in the future. Limitations : This dataset is a compilation of data taken from the published literature, as well as unpublished data from the Lowell UBV Asteroid Survey. It is a provisional data product and may be replaced with the complete product in the future.
CITATION_DESCRIPTION Tedesco, E.F, Eds., UBV Mean Asteroid Colors. EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2. NASA Planetary Data System, 1995.
ABSTRACT_TEXT This data set is a compilation of mean U-B and B-V color indices of asteroids, collected from the published literature and from the unpublished Lowell Observatory UBV Asteroid Survey.
PRODUCER_FULL_NAME CAROL NEESE
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