Research Interests



  • Optical/IR Interferometer Astrometry
  • Numerical Integration in Celestial Mechanics
  • Computational Techniques in Celestial Mechanics
  • Positional/Rotational Ephemeris of Solar System Objects
  • General Relativity and Astrometry
  • Clock Synchronization over Computer Networks
  • Astronomical Constants
  • Standardization of Software of Fundamental Astronomy & Space Geodesy


This page is written by Masafumi UMETANI
Contact to : m.umetani@nao.ac.jp