galisats: Configuration of Jupiter's Four Largest Satellites
Calculate and plot the configuration of Jupiter's four largest
satellites (known as Galilean satellites) for a given date and time
(ET - Ephemeris Time).
The 'galsat' function returns numerical values of the satellites’ positions.
x – the apparent rectangular coordinate of the satellite with respect to the
center of Jupiter’s disk in the equatorial plane in the units of Jupiter’s
equatorial radius; X is positive toward the west,
y – the apparent rectangular coordinate of the satellite with respect to the
center of Jupiter’s disk from the equatorial plane in the units of Jupiter’s
equatorial radius; Y is positive toward the north.
For more details see Meeus (1988, ISBN 0-943396-22-0) "Astronomical Formulae
for Calculators".
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