Harmonic Decomposition of Time Ephemeris TE405

Details Harmonic Decomposition of Time Ephemeris TE405 Harmonic Decomposition of Time Ephemeris TE405

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aj....126.2557h&link_type=abstract

The Astronomical Journal, Volume 126, Issue 5, pp. 2557-2561.

Astronomy and Astrophysics

Astronomy

7

Ephemerides, Reference Systems, Time

Scientific paper

By using Harada's method of nonlinear harmonic analysis, we have analyzed the latest version of the time ephemeris of Earth, TE405, provided by Irwin & Fukushima, which is the location-independent part of the two relativistic time scales, Barycentric Coordinate Time (TCB) and Geocentric Coordinate Time (TCG). We decomposed TE405 for its full period, 1600-2200, into a combination of a quadratic polynomial, 463 Fourier terms, and 36 mixed secular terms. The rms and the maximum of the residuals are 0.446 ns and 2.95 ns, respectively. By correcting for the effect of very long periodic terms, we determined the value of ΔLC, the Newtonian contribution of the Sun, Moon, and major planets to the mean rate between TCB and TCG, to be 1.4808268559×10-8+/-6×10-18.

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