High Precision Swiss Ephemeris R package swephR version 0.3.2 The Swiss Ephemeris (version 2.10.03) is a high precision ephemeris based upon the DE431 ephemerides from NASA's JPL. It covers the time range 13201 BCE to 17191 CE. This package uses the semi-analytic theory by Steve Moshier. For faster and more accurate calculations, the compressed Swiss Ephemeris data is available in the 'swephRdata' package. To access this data package, run 'install.packages("swephRdata", repos = "https://rstub.r-universe.dev", type = "source")'. The size of the 'swephRdata' package is approximately 115 MB. The user can also use the original JPL DE431 data. Software Imports: Rcpp (>= 0.12.18) LinkingTo: Rcpp Suggests: testthat, swephRdata, knitr, rmarkdown Ralf Stubner <ralf.stubner@gmail.com> Comprehensive R Archive Network (CRAN) Ralf Stubner [aut, cre], Victor Reijs [aut], Authors and copyright holder of the Swiss Ephemeris [aut, cph] AGPL 2025-03-29 application/tgz https://CRAN.R-project.org/package=swephR doi:10.32614/CRAN.package.swephR en-US