University of Iowa Cassini Ephemeris Tool

UiowaEphTool provides trajectories for Cassini, Ulysses, Voyager 1 and Voyager 2 spacecrafts in different coordinate systems. It’s integration into speasy makes easy to get any available object trajectory on any time range.

Basics: Getting data from UiowaEphTool module

All the trajectories available are discoverable using speasy dynamic inventory, they are organized by origin/coordinate system/object:

>>> import speasy as spz
>>> trajectories = spz.inventories.tree.uiowaephtool.Trajectories
>>> cassini_traj=spz.get_data(trajectories.Callisto.Co_rotational.Cassini, "2010-01-02", "2010-01-03")
>>> cassini_traj
<speasy.products.variable.SpeasyVariable object at ...>
>>> cassini_traj.shape
(1440, 3)
>>> cassini_traj.columns
['X', 'Y', 'Z']