Question about Saturn's ring inclination / tilt
Posted 10 January 2013 - 02:21 PM
Posted 10 January 2013 - 06:13 PM
Posted 10 January 2013 - 07:33 PM
Does the ephem, "Planetocentric orbital longitude of the Sun" equal the tilt of the rings to earth?
Mike, the tilt of Saturn’s ring plane from an earthbound observer’s perspective is equivalent to what Jean Meeus in his book Astronomical Algorithms calls “the saturnicentric latitude of the Earth referred to the plane of the ring”. Several of my diagrams on my Saturn webpage relate to the ring tilt as described in Jean’s model: www.CurtRenz.com/saturn
Posted 12 January 2013 - 04:11 AM
Not sure Mike, but I think a very close approximation would be what WinJupos calls "Declin. of Earth".
I ran across this JPL/NASA page about the ring crossing of the mid-90's:
Checking those numbers against WinJupos, the Dec of Earth value matches --- the 1st value given that is by WinJupos; not the "B" value.