Reduction quantities for Sidereal time. Explanations for Computer Ephemeris.

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Computer Ephemeris. Reduction quantities for Sidereal time. Explanations.

Each row contains for the date specified at 0^h of Time Dynamical Sidereal:

sidereal julian day,

interval from date to mean epoch T_mexpressedin julian years,

reduction quantities A+A', B+B', C, D, (all in seconds of arc), E (in 0.0001s), A', B' (in 0.001).

The same table, but for moments, expressed in Dynamical Time is to be found on 'Reduction. Dynamical time.' page.

For calculation of apperent places of fundamental stars the algorithm must be used.