||This class defines the spherical coordinates used in Astronomy.
||This class contains definitions used in Parsing and Editing of numbers,
and the default representation of the NaN (null) value.
||This abstract class defines the required methods to instanciate the
definition of a frame used for astronomical coordinates.
||Trigonometric and a few other functions used in the astronomical context.
||The class Astropos adds to Astrocoo the notions
of mouvement (proper motions, velocity) and error ellipses.
||The astronomical time may be expressed in (Modified) Julian Days,
Julian Years or Besselian years.
||This class, tightly connected to the
gathers non-standard unit conversions.
||Class that manipulates the coordinates defining a point on the
||The routines provided in this module define a "coordinate" as
a face number (between 1 and 6), and two (X,Y) values
in the range [-1,1[ representing the projection of a direction onto
||The ecliptic frame is defined such that the Sun has a latitude = 0.
||Class for 'nice' edition of numbers.
||This abstract class introduces the specificities of the equatorial
||The FK4 is an equatorial coordinate system (coordinate system linked to
the Earth) based on its B1950 position.
||The FK5 is an equatorial coordinate system (coordinate system linked to
the Earth) based on its J2000 position.
||The Galactic frame is defined such that the plane of our Galaxy
(the Milky Way) has a latitude close to zero.
||The ICRS frame (International Celestial Reference System) is defined
by the Hipparcos mission.
||The Otype is a classification of the astronomical objects
in a hierarchical structure.
||This class interprets text and is able to convert to numbers,
or find a symbol in a list of symbols.
||Class defining the Mathematical Projections of the Celestial Sphere.
||The Qbox divides the celestial sphere into "cells" of approximative
||The QboxNumber is just a number representing a cell
of the celestial sphere.
||The Supergalactic frame is defined such (0,0) represents the direction
toward the center of the Local Group of galaxies.
||Class able to deal with scientific units and make the appropriate