To cite package ‘astronomyengine’ in publications use:

  O'Hara-Wild M, Cross D (2026). _astronomyengine: R Bindings to the
  'Astronomy Engine' C Library_. R package version 0.1.0.9000,
  <https://github.com/mitchelloharawild/astronomyengine>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {astronomyengine: R Bindings to the 'Astronomy Engine' C Library},
    author = {Mitchell O'Hara-Wild and Don Cross},
    year = {2026},
    note = {R package version 0.1.0.9000},
    url = {https://github.com/mitchelloharawild/astronomyengine},
  }