34th Meeting of the AAS Division on Dynamical Astronomy, May 2003
9 Standards and Gauges
Oral, Tuesday, May 6, 2003, 1:00-3:05pm,

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[9.01] Invited: The IAU2000 Standards: The Newly Adopted Time, Coordinates, and Reference Frames.

E. M. Standish (JPL)

Over the past dozen years or so, the IAU has been deluged with resolutions from Division I (Fundamental Astronomy) regarding dynamics, reference frames, fundamental time-scales, earth orientation, etc. Some of the resolutions are merely cosmetic in nature, detailing the basic foundations which have been used by serious researchers for many years. Some of the other resolutions, however, will have a direct affect upon a number of different fields of study. Sooner or later, these changes will actually be implemented, and they will affect anyone doing precision-type work in astronomy, geophysics, and related fields. As with most changes, there are pros and cons; these will be discussed. On a more practical level, the following questions will be addressed: What major areas of astrometry will be affected? What specific items will change? What does one need to know in order to survive the changes? What does one have to do in order to not be adversely affected?

The research described in this publication was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.

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Bulletin of the American Astronomical Society, 35 #4
© 2003. The American Astronomical Soceity.