{"title":"An analysis of the annual Z-term","authors":"Wang Zheng-ming, Ren Jiang-ping, Mao Chang-jian","doi":"10.1016/0146-6364(80)90056-0","DOIUrl":null,"url":null,"abstract":"<div><p>Using the data obtained at 4 observatories at Tianjin, Beijing, Shanghai and Wuhan, we have calculated the annual Z-term in the variation of latitude. We have investigated the stability of the calculated values over a period of some 15 years and used them to derive corrections to the various nutation terms.</p></div>","PeriodicalId":100241,"journal":{"name":"Chinese Astronomy","volume":"4 1","pages":"Pages 9-16"},"PeriodicalIF":0.0000,"publicationDate":"1980-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0146-6364(80)90056-0","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Astronomy","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0146636480900560","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
Using the data obtained at 4 observatories at Tianjin, Beijing, Shanghai and Wuhan, we have calculated the annual Z-term in the variation of latitude. We have investigated the stability of the calculated values over a period of some 15 years and used them to derive corrections to the various nutation terms.