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According to JPL HORIZONS, the sub-solar latitude on Uranus has maxima on 1946-04-03 and 2030-04-11, and Uranus's heliocentric J2000 ecliptic longitude at those times is 77.54°. If I put the pole coordinates from the IAU WGCCRE report through the NED coordinate calculator, I get a J2000 ecliptic longitude of 77.65° for Uranus's south pole. The solstice ...


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I have made an interactive simulation of Uranus and its seasons at https://ecliptiqc.ca/UranusEN.php. Playing with it, I get the north pole of Uranus pointing sunwards in early 1946 (my steps are 6 months, so I can’t be more precise for now). The actual date may be slightly different, as I use a “fixed” orbit instead of the osculating elements, but it would ...


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