Ephemeris of Saturnian rings. Explanations for Computer Ephemeris (DE200/LE200).

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Computer Ephemeris. Ephemeris for physical observations of Saturnian rings. Explanations.

Each row of the table contains for date specified at 0h of Time Terrestrial Dynamical:

semimajor axis of outer ring - a - (seconds),

semiminor axis of outer ring - b - (seconds), negative if B . 0

planetocentric longitude of the Earth minus 180^o- U - (degrees)

planetocentric latitude of the Earth - B - (degrees)

position angle of semiminor axis of the rings- P - (degrees)

planetocentric longitude of the Sun minus 180^o- U' - (degrees)

planetocentric latitude of the Sun - B' - (degrees)

heliocentric position angle of semiminor axis of the rings - P' - (degrees)

angular distance from ascending node of the rings on Earth's equator to ascending node of the rings on ecliptic- omega - (degrees)