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Units of relativistic time scales and associated quantities

Published online by Cambridge University Press:  06 January 2010

S. A. Klioner
Affiliation:
Lohrmann Observatory, Dresden Technical University, 01062 Dresden, Germany
N. Capitaine
Affiliation:
SYRTE, Observatoire de Paris, CNRS, UPMC, 61 Av. de l'Observatoire, 75014 Paris, France
W. M. Folkner
Affiliation:
JPL m/s 301-150, 4800 Oak Grove Drive, Pasadena CA 91109, USA
B. Guinot
Affiliation:
SYRTE, Observatoire de Paris, CNRS, UPMC, 61 Av. de l'Observatoire, 75014 Paris, France
T.-Y. Huang
Affiliation:
Nanjing University, Astronomy Department, 22 Hankou Road, 210093 Nanjing, China PR
S. M. Kopeikin
Affiliation:
Department of Physics & Astronomy, University of Missouri, Columbia, Missouri 65211, USA
E. V. Pitjeva
Affiliation:
Institute of Applied Astronomy RAS, Nab Kutuzova 10, 191187 St Petersburg, Russia
P. K. Seidelmann
Affiliation:
University of Virginia, 129 Fontana Ct, Charlottesville VA 22911-3531, USA
M. H. Soffel
Affiliation:
Lohrmann Observatory, Dresden Technical University, 01062 Dresden, Germany
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Abstract

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This note suggests nomenclature for dealing with the units of various astronomical quantities that are used with the relativistic time scales TT, TDB, TCB and TCG. It is suggested to avoid wordings like “TDB units” and “TT units” and avoid contrasting them to “SI units”. The quantities intended for use with TCG, TCB, TT or TDB should be called “TCG-compatible”, “TCB-compatible”, “TT-compatible” or “TDB-compatible”, respectively. The names of the units second and meter for numerical values of all these quantities should be used without any adjectives. This suggestion comes from a special discussion forum created within IAU Commission 52 “Relativity in Fundamental Astronomy”.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2010

References

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IAU Resolutions adopted at the XXVIth General Assembly of the IAU (2006), Resolution 3 “Re-definition of Barycentric Dynamical Time, TDB”, http://www.iau.org/Resolutions_at_GA-XXVI.340.0.htmlGoogle Scholar
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