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VLBI-based Earth Orientation Parameters (EOP)

  • Intensive Earth Orientation Parameter Series (EOP-I)

    The Intensive Series EOP product is a series of EOP results, one for each UT1 Intensive session. The series is up-to-date with the most recent data and includes a minimum of one year of data.
  • Session Earth Orientation Parameter Series (EOP-S)

    The Session Series EOP product is a series of EOP results, one for each geodetic session. Data are irregularly spaced and there are multiple results for days on which there were simultaneous sessions. The series is up-to-date with the most recent data and includes a minimum of one year of results.
  • Global VLBI Solutions

    The global VLBI solutions from which the above series are derived including explanations, comparisons and format information.
Intensive Earth Orientation
Session Earth Orientation
Global VLBI Intensive (EOP-I) Solution i2008a Global VLBI Session (EOP-S) Solution 2008b
USNO Master Clock Time
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