Astrophysics and Space Science

, Volume 177, Issue 1–2, pp 451–456 | Cite as

Toward consistency in the uses of ephemerides

  • Mitsuru Sôma


The apparent coordinates in the printed material almanacs have inconsistencies concerning the reference frame. These inconsistencies produce secular errors of about 0 . 001/century in the equatorial coordinates and periodic errors of about 0 . 04 in the ecliptic coordinates. It is recommended that the calculation of apparent places of planets should be based on a consistent reference frame as well as on a consistent system of astronomical constants.


Reference Frame Consistent System Periodic Error Consistent Reference Astronomical Constant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • Mitsuru Sôma
    • 1
  1. 1.Tokyo Astronomical ObservatoryUniversity of TokyoTokyoJapan

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