Overview

SPICE kernels contain critical information about the geometry, pointing, and timing of NASA's spacecrafts.

For more information about SPICE visit the home page of PDS's Navigation and Ancillary Information Facility (NAIF).

Note that the primary source of SPICE data is NAIF's anonymous FTP site. See, in particular:

• /pub/naif/VOYAGER: Voyager-related files.
• /pub/naif/generic_kernels: Generic kernels, e.g., the latest planetary ephemerides, constants and leap seconds.
• /pub/naif/toolkit: The SPICE software toolkit, ready-made for most popular platforms.
• /pub/naif/toolkit_docs: Users' guides and tutorials.

The SPICE Tabs

The tabs associated with this page describe the SPICE data files and related information---how to obtain it and how to use it.

• Ephemerides - SP kernels describing the trajectory of the spacecraft and the motion of the planet and satellites during each planetary encounter.
• Pointing - C kernels and other pointing information for Voyager's instruments.
• Other - Other related kernels helpful in the analysis of Voyager data.