The Standards of Fundamental Astronomy (SOFA) software libraries are a collection of subroutines that implement official International Astronomical Union...

libraries of IAU-sanctioned algorithms for manipulating and transforming among the BCRS and other reference systems: the Standards of Fundamental Astronomy (SOFA)...

Jet Propulsion Laboratory, California Institute of Technology; the IAU Standards Of Fundamental Astronomy (SOFA) initiative; the Institut de Mécanique Céleste...

Out Sofa Sound, recording studio founded by Peter Hammill Standards of Fundamental Astronomy, an astronomical software library SOFA (component system)...

constant". Numerical Standards for Fundamental Astronomy. IAU Division I Working Group on Numerical Standards for Fundamental Astronomy. Retrieved 24 June...

iau-a2.gitlab.io. IAU Division I Working Group on Numerical Standards for Fundamental Astronomy. Retrieved 25 June 2021., citing Ries, J. C., Eanes, R. J...

{a} }.} A version of this formula is used in the International Astronomical Union's Standards of Fundamental Astronomy; a comparison of the IAU's algorithm...

SOFA, the IAU's Standards of Fundamental Astronomy, an accessible and authoritative set of algorithms and procedures that implement standard models used in...

Jerry (18 June 2008). "Mass of Jupiter". Universe Today. Retrieved 2017-10-31. "Numerical Standards for Fundamental Astronomy". maia.usno.navy.mil. IAU...

"The IAU 2009 system of astronomical constants: the report of the IAU working group on numerical standards for Fundamental Astronomy". Celestial Mechanics...

solar mass (M☉) is a standard unit of mass in astronomy, equal to approximately 2×1030 kg. It is approximately equal to the mass of the Sun. It is often...

Galactic astronomy is the study of the Milky Way galaxy and all its contents. This is in contrast to extragalactic astronomy, which is the study of everything...

"The IAU 2009 system of astronomical constants: the report of the IAU working group on numerical standards for Fundamental Astronomy" (PDF). Celest Mech...

Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry...

proposed to the IAU Working Group on Numerical Standards for Fundamental Astronomy (NSFA) the values of the masses of the three largest asteroids, the Moon-Earth...

Retrieved 10 February 2022. IAU Working Group on Numerical Standards for Fundamental Astronomy. "IAU WG on NSFA Current Best Estimates". US Naval Observatory...

"The IAU 2009 system of astronomical constants: the report of the IAU working group on numerical standards for Fundamental Astronomy". Celestial Mechanics...

2020-08-04. Retrieved 2008-12-31. "Equatorial Radius of the Earth". Numerical Standards for Fundamental Astronomy: Astronomical Constants : Current Best Estimates...

in the unlikely event of a negative leap second, 86,399 seconds). One authoritative source, the Standards of Fundamental Astronomy (SOFA), deals with this...

Indian astronomy refers to astronomy practiced in the Indian subcontinent. It has a long history stretching from pre-historic to modern times. Some of the...

"The IAU 2009 system of astronomical constants: the report of the IAU working group on numerical standards for Fundamental Astronomy". Celestial Mechanics...

the Sun through the Solar System. The most important fundamental distance measurements in astronomy come from trigonometric parallax, as applied in the...

of matter, involving the study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy...

The most important fundamental distance measurements in astronomy come from trigonometric parallax, as applied in the stellar parallax method. As the Earth...

planetary ephemeris and its applications in fundamental physics". Celestial Mechanics and Dynamical Astronomy. 111 (3): 363. arXiv:1108.5546. Bibcode:2011CeMDA...

of celestial objects. It may be implemented in spherical or rectangular coordinates, both defined by an origin at the centre of Earth, a fundamental plane...

of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy...

available at https://github.com/Smithsonian/SuperNOVAS. Astronomy portal Standards of Fundamental Astronomy Kaplan, George H. "NOVAS". Retrieved 2015-07-16....

of A-type dwarf spectral standard stars, but not all of these have survived to this day as standards. The "anchor points" and "dagger standards" of the...

Theoretical astronomy is the use of analytical and computational models based on principles from physics and chemistry to describe and explain astronomical...