Navigation and service

IAU(1991) RECOMMENDATION VIII


Astronomical quantities, conventions, models, software, etc


The XXIst General Assembly of the International Astronomical Union,

recognizing,

a) the importance to astronomy of adopting conventional values of astronomical and physical constants,

b) that values of these constants should be unchanged unless they differ significantly from their latest estimates,

c) that estimates of these constants should be improved frequently to represent the current status of knowledge,

d) the necessity of providing standard procedures using these numerical values, and,

noting,

a) that the MERIT Standards and IERS Standards have contributed significantly to the progress of astronomy and geodesy,

b) that numerical values in these standards have served as a system of constants in analyzing observations of high quality, and

considering,

that procedures in these standards do not cover the whole of fundamental astronomy,

recommends,

that a permanent working group be organized by Commissions 4, 5, 8, 19, 24 and 31, in consultation with the IAG and the IERS, in order to update and improve the system of astronomical units and constants, the list of estimates of fundamental astronomical quantities and standard procedures; this group shall:

1. prepare a draft report on the system of astronomical units and constants at least six months before the XXIInd General Assembly (1994),

2. prepare a draft list of best estimates of astronomical quantities at least six months before each following General Assembly,

3. prepare, at least six months before each following General Assembly, a draft report on standard procedures needed in fundamental astronomy, which,

a) should have a maximum degree of compatibility with the IERS Standards,

b) should include the implementations of procedures in the form of tested software and/or test cases,

c) should be available not only in written form, but also in machine readable form,

4. prepare a draft report on possible electronic access to these units, constants, quantities and procedures at least six months before the XXIInd General Assembly (1994).


Created: 1 Jan 2001. Text provided by the former Central Bureau.

This Page

© 2013 - Federal Agency for Cartography and Geodesy. All rights Reserved