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parallaxicality
2008-Dec-25, 05:24 PM
Does anyone know where I can find out about the axial tilts of the largest moons?

grant hutchison
2008-Dec-25, 06:00 PM
They're all pretty closely aligned with the rotation axes of their parent planets. (Edit: I forgot Triton. As with so many things, Triton is an exception.)

What data format do you need? The Explanatory Supplement to the Astronomical Almanac contains pole orientations in (Earth) equatorial coordinates. For Celestia, I converted these to refer to the equators of the parent planets: those coordinates are readable from Celestia's solarsys.ssc data file.

Grant Hutchison

grant hutchison
2008-Dec-25, 06:53 PM
For reference:
Here (http://astrogeology.usgs.gov/Projects/WGCCRE/constants/iau2000_table1.html) are the USGS/IAU definitions for the rotation poles of the planets, and here (http://astrogeology.usgs.gov/Projects/WGCCRE/constants/iau2000_table2.html) are the definitions for their major satellites.

Grant Hutchison