{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Thomas Morgan", "hasEmail": "mailto:thomas.h.morgan@nasa.gov"}, "description": "This is a compilation of mean U-B and B-V color indices of asteroids. This data file was provided by E.F. Tedesco, MRC and is a *preliminary* version. The version actually published will include UBV observations published through 1994 and the individual, referenced and commented, observations from which the average value was obtained. 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 In addition, it uses Ted Bowell's unpublished observations from the Lowell UBV Asteroid Survey.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.", "identifier": "urn:nasa:pds:context_pds3:data_set:data_set.ear-a-5-ddr-ubv-mean-values-v1.0_kwsm-gwvj", "issued": "2021-05-21", "keyword": ["asteroid", "support-archives"], "landingPage": "https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=EAR-A-5-DDR-UBV-MEAN-VALUES-V1.0", "license": "http://www.usa.gov/publicdomain/label/1.0/", "modified": "2025-07-17", "programCode": ["026:005"], "publisher": {"@type": "org:Organization", "name": "National Aeronautics and Space Administration"}, "references": ["https://pds.nasa.gov"], "theme": ["Earth Science"], "title": "UBV MEAN VALUES V1.0"}