IAU Working Group on
Numerical Standards for Fundamental Astronomy
Welcome to the updated web page for the International Astronomical Union
(IAU) Working Group (WG) on Numerical Standards for Fundamental Astronomy
(NSFA). This Division I WG was set up by a proposal adopted at the IAU
General Assembly in 2006. The stated goals of the WG based on the proposal
The membership of the WG has been chosen to span a wide range of expertise.
The current membership is:
- Update "IAU Current Best Estimates
- Conform with IAU Resolutions/IERS Conventions/SI
- Brian Luzum (Chair)
- Nicole Capitaine
- Agnes Fienga
- Bill Folkner
- Toshio Fukushima
- James Hilton
- Catherine Hohenkerk
- George Krasinsky
- Gerard Petit
- Elena Pitjeva
- Michael Soffel
- Patrick Wallace
Current Best Estimates
One of the primary goals of the WG is to assemble the IAU "Current Best
Estimates" (CBEs). The list of CBEs is provided here.
The current draft resolutions are provided here.
The list of NSFA Bulletins that have been sent is provided below.
References of Interest
- Kaplan, G. (ed.), 1981, "The IAU Resolutions on Astronomical
Constants, Time Scales, and the Fundamental Reference Frame,"
IAU Circular 163. Particularly pp. 3-7.
E.M., 1995, "Report of the IAU WGAS Sub-group on Numerical Standards,"
Highlights of Astronomy, Vol. 12, International Astronomical
Union, 1994, I. Appenzeller (ed.), pp. 180-184.
Fukushima, T., 2000, "Report on Astronomical Constants," Proc. IAU
Colloquium 180, Johnston, K. J., McCarthy, D. D., Luzum, B. J., Kaplan,
G., pp. 417-427.
- Fukushima, T., 2003, "Report on Astronomical Constants," Highlights
of Astronomy, Vol. 13, International Astronomical Union, 2002,
H. Rickman (ed.), pp. 107-112.
- McCarthy, D. D. and Petit, G. (eds.), 2003, IERS Conventions,
IERS Technical Note 32. Particularly
Chapter 1 and
- Groten, E., 200x, "Fundamental Parameters and Current (2004) Best
Estimates of the Parameters of Common Relevance to Astronomy, Geodesy,
- Astronomical Almanac, 2008,