天体暦
jpl.nasa.gov/progress_report/42-178/178C.pdf.
↑ Pitjeva, E. V (2005). “High-precision ephemerides of planets—EPM and determination of some astronomical constants”. Solar System Research 39 (3): 176–186. doi:10.1007/s11208-005-0033-2. https://ui.adsabs.harvard.edu/link_gateway/2005SoSyR..39..176P/doi:10.1007/s11208-005-0033-2. (trans. from Астрономический вестник 39 (3): 202–213).