Data Set Information
DATA_SET_NAME SEVEN COLOR ASTEROID SURVEY V1.0
DATA_SET_ID EAR-A-3-RDR-SCAS-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION Data Set Overview : The Seven-color Asteroid Survey (SCAS) was conducted at the IRTF on Mauna Kea, Hawaii from 1992 to 1994. It consists of photometry in seven filters from 0.9 to 2.3 microns, lettered A through G in order of increasing wavelength. The bandpasses were specifically designed to capture the essential mineralogic information present in infrared asteroid spectra. The filter bandpasses were chosen to avoid the atmospheric water features at 1.4 and 1.9 microns. 126 asteroids are included in this data set. Parameters : The reflectances have been normalized to band A, at 0.913 microns, and are thus referred to as B/A, C/A, D/A, E/A, F/A, and G/A. The band difference B-D (actually the difference in the normalized values) is also tabulated as an indicator of band depth/continuum slope. Also included are the RMS errors associated with each value. The B-D band difference is a strong indicator of the main source of variation in the SCAS data set. In Clark, et al. (1995) [CLARKETAL1995] it is shown that B-D can be used to distinguish between typical S-class asteroid spectra and typical K-class spectra. B-D essentially measures the depth of the 1-micron absorption feature, in which band B is located, as compared to the continuum just outside the 1-micron feature, where band D is located. Data : The data are included in the ascii table 'scas.tab'. Ancillary Data : The filter FWHM and center wavelengths are tabulated in the label file 'scas.lbl'.
DATA_SET_RELEASE_DATE 1996-03-29T00:00:00.000Z
START_TIME 1992-01-01T12:00:00.000Z
STOP_TIME 1994-01-01T12:00:00.000Z
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
INSTRUMENT_NAME
INSTRUMENT_ID
INSTRUMENT_TYPE
NODE_NAME Small Bodies
ARCHIVE_STATUS SUPERSEDED
CONFIDENCE_LEVEL_NOTE Confidence Level Overview : The user is referred to the paper in which this data was published: Clark, et al. (1995) [CLARKETAL1995] for information on the confidence level of the data. Review : This data set underwent external peer review on Mar. 29, 1996.
CITATION_DESCRIPTION Citation TBD
ABSTRACT_TEXT The Seven-color Asteroid Survey (SCAS) was conducted at the IRTF on Mauna Kea, Hawaii from 1992 to 1994. It consists of photometry in seven filters from 0.9 to 2.3 microns, lettered A through G in order of increasing wavelength. The bandpasses were specifically designed to capture the essential mineralogic information present in infrared asteroid spectra. The filter bandpasses were chosen to avoid the atmospheric water features at 1.4 and 1.9 microns.
PRODUCER_FULL_NAME CAROL NEESE
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