{"id":"https://openalex.org/W114646570","doi":null,"title":"The Proper Motion and Parallax of Barnard's Star: Errors and Precision in Small-Telescope Astrometry","display_name":"The Proper Motion and Parallax of Barnard's Star: Errors and Precision in Small-Telescope Astrometry","publication_year":2011,"publication_date":"2011-05-01","ids":{"openalex":"https://openalex.org/W114646570","mag":"114646570"},"language":"en","primary_location":{"id":"mag:114646570","doi":null,"is_oa":false,"landing_page_url":"http://www.wvi.com/~rberry/astronomy/barnardsstar/SAS2011_Barnards_Paper.pdf","pdf_url":null,"source":{"id":"https://openalex.org/S4306529136","display_name":"SASS","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"SASS","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/A5109901911","display_name":"Richard Lee Berry","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"R. L. Berry","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5109901911"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.01036825,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"30","issue":null,"first_page":"79","last_page":"86"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.9204000234603882,"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/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.9204000234603882,"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/T12917","display_name":"Astronomy and Astrophysical Research","score":0.06520000100135803,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"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/T14163","display_name":"Astronomical Observations and Instrumentation","score":0.011599999852478504,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/barnard-s-star","display_name":"Barnard's star","score":0.9980000257492065},{"id":"https://openalex.org/keywords/proper-motions","display_name":"proper motions","score":0.9900000095367432},{"id":"https://openalex.org/keywords/stellar-parallax","display_name":"stellar parallax","score":0.8320000171661377},{"id":"https://openalex.org/keywords/differential-astrometry","display_name":"differential astrometry","score":0.9950000047683716}],"concepts":[{"id":"https://openalex.org/C133725777","wikidata":"https://www.wikidata.org/wiki/Q181505","display_name":"Astrometry","level":3,"score":0.9715155363082886},{"id":"https://openalex.org/C15759828","wikidata":"https://www.wikidata.org/wiki/Q165074","display_name":"Parallax","level":2,"score":0.9160720109939575},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.7190483212471008},{"id":"https://openalex.org/C2780851263","wikidata":"https://www.wikidata.org/wiki/Q845940","display_name":"Guide star","level":3,"score":0.6539623737335205},{"id":"https://openalex.org/C2780848835","wikidata":"https://www.wikidata.org/wiki/Q4213","display_name":"Telescope","level":2,"score":0.5930643677711487},{"id":"https://openalex.org/C176673079","wikidata":"https://www.wikidata.org/wiki/Q193223","display_name":"Proper motion","level":3,"score":0.5649361610412598},{"id":"https://openalex.org/C150846664","wikidata":"https://www.wikidata.org/wiki/Q7602306","display_name":"Stars","level":2,"score":0.5440276861190796},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.3626120686531067},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.356577068567276},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.35505807399749756},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.09032344818115234}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:114646570","doi":null,"is_oa":false,"landing_page_url":"http://www.wvi.com/~rberry/astronomy/barnardsstar/SAS2011_Barnards_Paper.pdf","pdf_url":null,"source":{"id":"https://openalex.org/S4306529136","display_name":"SASS","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"SASS","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":5,"referenced_works":["https://openalex.org/W1643484380","https://openalex.org/W1978927040","https://openalex.org/W2025612562","https://openalex.org/W2058627486","https://openalex.org/W2113481865"],"related_works":["https://openalex.org/W2053042750","https://openalex.org/W2013752098","https://openalex.org/W2045239110","https://openalex.org/W3198578773","https://openalex.org/W2074579246","https://openalex.org/W3158053450","https://openalex.org/W1971547666","https://openalex.org/W2153044516","https://openalex.org/W1967903449","https://openalex.org/W2183870497"],"abstract_inverted_index":{"This":[0],"paper":[1],"examines":[2],"a":[3,42],"series":[4],"of":[5,15,50,64,67,118],"measurements":[6],"made":[7,71],"to":[8,45],"determine":[9],"the":[10,24,35,46,51,65,98,106,112,119],"proper":[11,114],"motion":[12],"and":[13,74,102,115],"parallax":[14,116],"Barnard's":[16,68],"Star":[17,69],"using":[18,76],"differential":[19,22],"astrometry.":[20],"In":[21],"astrometry,":[23],"same":[25],"reference":[26,52],"stars":[27],"are":[28],"used":[29],"for":[30],"every":[31],"coordinate":[32,37,55,88],"determination.":[33],"Although":[34],"absolute":[36],"solution":[38],"is":[39],"offset":[40],"by":[41],"constant":[43],"due":[44],"imprecisely":[47],"known":[48],"positions":[49],"stars,":[53],"relative":[54],"solutions":[56],"can":[57,89],"be":[58,90],"precise.":[59],"For":[60],"this":[61],"study,":[62],"observations":[63],"field":[66],"were":[70],"in":[72,86,105],"2009":[73],"2010":[75],"an":[77],"8-inch":[78],"\u0192/4":[79],"Newtonian":[80],"telescope.":[81],"The":[82],"singlenight":[83],"standard":[84],"error":[85,100,103],"each":[87],"as":[91,93,109,111],"low":[92],"10":[94],"mas.":[95],"We":[96],"discuss":[97],"errors,":[99],"distribution,":[101],"sources":[104],"astrometric":[107],"solution,":[108],"well":[110],"derived":[113],"motions":[117],"star.":[120]},"counts_by_year":[],"updated_date":"2026-09-22T06:50:58.402377","created_date":"2016-06-24T00:00:00"}
