{"id":"https://openalex.org/W1573450855","doi":null,"title":"DE 102: a numerically integrated ephemeris of the moon and planets spanning forty-four centuries.","display_name":"DE 102: a numerically integrated ephemeris of the moon and planets spanning forty-four centuries.","publication_year":1983,"publication_date":"1983-08-01","ids":{"openalex":"https://openalex.org/W1573450855","mag":"1573450855"},"language":"en","primary_location":{"id":"mag:1573450855","doi":null,"is_oa":false,"landing_page_url":"https://ntrs.nasa.gov/search.jsp?R=19830063236","pdf_url":null,"source":{"id":"https://openalex.org/S4306402118","display_name":"NASA Technical Reports Server (NASA)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Astronomy and Astrophysics","raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5039735644","display_name":"X. X. Newhall","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1334627681","display_name":"Jet Propulsion Laboratory","ror":"https://ror.org/027k65916","country_code":"US","type":"facility","lineage":["https://openalex.org/I122411786","https://openalex.org/I1334627681","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"X. X. Newhall","raw_affiliation_strings":["Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States","institution_ids":["https://openalex.org/I1334627681"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015285678","display_name":"E. MYLES STANDISH","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"E. M. Standish","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5080609418","display_name":"James Gordon Williams","orcid":"https://orcid.org/0000-0002-8441-5937","observed_orcids":["https://orcid.org/0000-0002-8441-5937"]},"institutions":[{"id":"https://openalex.org/I122411786","display_name":"California Institute of Technology","ror":"https://ror.org/05dxps055","country_code":"US","type":"education","lineage":["https://openalex.org/I122411786"]},{"id":"https://openalex.org/I1334627681","display_name":"Jet Propulsion Laboratory","ror":"https://ror.org/027k65916","country_code":"US","type":"facility","lineage":["https://openalex.org/I122411786","https://openalex.org/I1334627681","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"J. G. Williams","raw_affiliation_strings":["California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA, United States"],"raw_orcid":"https://orcid.org/0000-0002-8441-5937","affiliations":[{"raw_affiliation_string":"California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA, United States","institution_ids":["https://openalex.org/I122411786","https://openalex.org/I1334627681"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":12.2965,"has_fulltext":false,"cited_by_count":186,"citation_normalized_percentile":{"value":0.98561264,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":87,"max":100},"biblio":{"volume":"125","issue":"1","first_page":"150","last_page":"167"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12836","display_name":"History and Developments in Astronomy","score":0.5654000043869019,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12836","display_name":"History and Developments in Astronomy","score":0.5654000043869019,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11082","display_name":"Spacecraft Dynamics and Control","score":0.12710000574588776,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","score":0.0803999975323677,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/lunar-ephemerides","display_name":"lunar ephemeris","score":0.8740000128746033},{"id":"https://openalex.org/keywords/planetary-ephemerides","display_name":"planetary ephemerides","score":0.9900000095367432},{"id":"https://openalex.org/keywords/numerical-integration","display_name":"numerical integration","score":0.7639999985694885},{"id":"https://openalex.org/keywords/historical-astronomical-observations","display_name":"historical astronomical observations","score":0.7200000286102295},{"id":"https://openalex.org/keywords/laser-ranging","display_name":"laser ranging","score":0.7400000095367432},{"id":"https://openalex.org/keywords/radar-measurements","display_name":"radar observations","score":0.5429999828338623},{"id":"https://openalex.org/keywords/viking-landers","display_name":"Viking landers","score":0.8299999833106995},{"id":"https://openalex.org/keywords/ephemeris-accuracy","display_name":"ephemeris accuracy","score":0.621999979019165}],"concepts":[{"id":"https://openalex.org/C64828349","wikidata":"https://www.wikidata.org/wiki/Q120200","display_name":"Ephemeris","level":3,"score":0.9549591541290283},{"id":"https://openalex.org/C51244244","wikidata":"https://www.wikidata.org/wiki/Q634","display_name":"Planet","level":2,"score":0.5985214114189148},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5461552739143372},{"id":"https://openalex.org/C539450922","wikidata":"https://www.wikidata.org/wiki/Q544","display_name":"Solar System","level":2,"score":0.49362218379974365},{"id":"https://openalex.org/C58142911","wikidata":"https://www.wikidata.org/wiki/Q3863","display_name":"Asteroid","level":2,"score":0.49108290672302246},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.45063960552215576},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.4399576485157013},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.26417291164398193},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:1573450855","doi":null,"is_oa":false,"landing_page_url":"https://ntrs.nasa.gov/search.jsp?R=19830063236","pdf_url":null,"source":{"id":"https://openalex.org/S4306402118","display_name":"NASA Technical Reports Server (NASA)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Astronomy and Astrophysics","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4230533528","https://openalex.org/W266487191","https://openalex.org/W1624202395","https://openalex.org/W1669392571","https://openalex.org/W111682585","https://openalex.org/W2149700406","https://openalex.org/W2994053666","https://openalex.org/W3127730153","https://openalex.org/W4234810923","https://openalex.org/W1662604109"],"abstract_inverted_index":{"It":[0],"is":[1,84,112],"pointed":[2],"out":[3],"that":[4],"the":[5,8,12,23,74,77,87,95,99,120],"1960's":[6],"were":[7,29,70],"turning":[9],"point":[10],"for":[11],"generation":[13],"of":[14,22,25,76,98,103],"lunar":[15,57],"and":[16,53,65],"planetary":[17],"ephemerides.":[18],"All":[19],"previous":[20],"measurements":[21],"positions":[24],"solar":[26],"system":[27],"bodies":[28],"optical":[30],"angular":[31],"measurements.":[32],"New":[33],"technological":[34],"improvements":[35],"leading":[36],"to":[37,45,56,72,114,126],"immense":[38],"changes":[39],"in":[40],"observational":[41],"accuracy":[42,75,105],"are":[43,107],"related":[44],"developments":[46],"concerning":[47],"radar,":[48],"Viking":[49],"landers":[50],"on":[51],"Mars,":[52],"laser":[54],"ranges":[55],"corner":[58],"cube":[59],"retroreflectors.":[60],"Suitable":[61],"numerical":[62],"integration":[63,118],"techniques":[64],"more":[66],"comprehensive":[67],"physical":[68],"models":[69],"developed":[71],"match":[73],"modern":[78,115],"data":[79],"types.":[80],"The":[81,110,117],"present":[82],"investigation":[83],"concerned":[85],"with":[86],"first":[88],"integrated":[89],"ephemeris,":[90],"DE":[91],"102,":[92],"which":[93,106],"covers":[94],"entire":[96],"span":[97],"historical":[100],"astronomical":[101],"observations":[102],"usable":[104],"known.":[109],"fit":[111],"made":[113],"data.":[116],"spans":[119],"time":[121],"period":[122],"from":[123],"1411":[124],"BC":[125],"3002":[127],"AD.":[128]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":20},{"year":2016,"cited_by_count":5},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":4},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":3}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}
