Practical consequences of the improved precession-nutation models

Details Practical consequences of the improved precession-nutation models Practical consequences of the improved precession-nutation models

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hia....13..605w&link_type=abstract

In: Highlights of Astronomy, Vol. 13, as presented at the XXVth General Assembly of the IAU - 2003 [Sydney, Australia, 13 - 26 J

Astronomy and Astrophysics

Astronomy

Precession, Nutation

Scientific paper

The IAU2000 precession-nutation model is classical in form unlike the associated Earth rotation model. The counterpart of GST in the new system is ""Earth Rotation Angle"" which is directly proportional to UT1 and is reckoned with respect to a kinematically-defined ""non-rotating origin"" the CEO. Though essential for interpreting Earth-rotation at VLBI accuracies and simplifying the computation of HADec the CEO has aroused considerable controversy.
The new models came into use for VLBI analysis at 2003 Jan 1 and subsequent IERS Bulletins provide dXdY relative to the IAU2000 celestial pole in addition to the existing dPsidEpsilon corrections to IAU1976/80.
The almanac offices face interesting choices of how to present the new quantities and which if any of the existing tabulations can be omitted.
Most astronomers will however be little affected. In parallel with developing the new canonical models considerable efforts have been made also to provide classical equivalents of similar accuracy to give users a choice of when (or whether) to adopt the new methods. The models both new and classical have been implemented as Fortran subroutines and published through the IERS website. An extended set of routines is being evaluated by the SOFA Reviewing Board.

Affiliated with

Also associated with

No associations

Rating

Practical consequences of the improved precession-nutation models does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Practical consequences of the improved precession-nutation models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Practical consequences of the improved precession-nutation models will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-805871