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  • 7-25-14 - Some seats have been added to the classroom for the Oct 21-23 SPICE class in Maryland (see the 5-29-14 announcement below). So a few more registrations are being accepted.

  • 7-23-14 - The SPICE Toolkits have been changed to the new N65 versions. These are fully backwards compatible with previous versions, so we recommend all SPICE users to upgrade. Read the "" for your programming language and computing environment for details about new and revised capabilities and bug fixes.

  • 5-29-14 - NAIF announces a SPICE programming class will be held Oct 21 - 23 on the East Coast of the U.S., in Maryland. Details about the class and the registration form are available here. There is no charge for the class, but advance registration is required... the sooner, the better, but no later than September 16. The 55 seats will be allocated on a first come, first served basis.

    The class will consist of a combination of lectures based on the SPICE tutorials, and student-executed programming lessons ("open book" style), available in each of the four programming languages supported by NAIF (Fortran 77, C, IDL and Matlab).

    The class is fully booked; if you submit a registration form you will be placed on the waiting list. NAIF anticipates some openings will occur.

  • 4-25-14 - The latest ephemeris for comet Siding Spring (C/2013 A1), solution number 46 produced by JPL's Solar System Dynamics Group, is now available on the NAIF server here:

  • 4-17-14 - A new, generic planetary constants kernel (PCK) containing Gm values for the planets, their major satellites, and the planet-satellite systems has been placed on the NAIF server here:

  • 4/15/14 - The IERS has announced a new leap second will NOT be added at midnight on 30 June 2014. Thus the current SPICE leapseconds kernels (LSK) available from the NAIF server at the usual location,, will remain effective. Separate versions for Unix/Linux/Mac (naif0010.tls) and for PCs running Windows (naif0010.tls.pc) are available.

  • 1/16/14 - A SPICE Newsletter (PDF) is available.

  • 1/2/14 - A new link has been added to the NAIF website: "Self training." This provides access to the reduced set of SPICE tutorials (generally smaller versions, and fewer of them) and the SPICE programming lessons used in the SPICE training classes taught on occasion near JPL. Use this link to conduct your own beginner's SPICE training class.

  • 11/19/13 - The Rules webpage has been updated to better reflect the conditions under which SPICE may be used. Current and prospective new SPICE users should be sure to carefully read those rules.

  • 10/31/13 - NAIF has announced the release of Version 1.0.0 of WebGeocalc (PDF). WGC provides a graphical user interface to many of the observation geometry capabilities available within the SPICE system. A WGC user need have only a computer with a standard browser and an Internet connection — all of the computations are done on the NAIF server, which has access to all of the SPICE data stored thereon.

  • 9/26/11 - There is a symbol name conflict resulting in a segmentation fault when trying to use either the current IDL Toolkit ("Icy") or the current alpha-test version of the Java Native Interface Toolkit ("JNISpice") under Mac OSX version 10.7 (a.k.a. "Lion") or later. A fix has been found and will become available in the next Toolkit release later this year. Those needing the Icy (IDL) fix now may get a patched version of the N64 Icy Toolkit here:

  • 8/18/10 - A memory leak did exists in the "Mice" Toolkits (the MATLAB-based Toolkits) that exhibits most severely when returning SPK state or position vectors using large vectorized time arrays within large logic loops, e.g. look-up 1000 state vectors on each pass of a 1000 iteration loop. The leak's effect seems more apparent on Windows than on other Mice platforms.
    The correction has been made in the N65 Toolkits.

  • 7/1/10 - An alpha-test version of the SPICE Digital Shape Kernel (DSK) subsystem is available. This release makes use of the latest and final underlying Digital Shape Kernel file format—it will not change from now on. These special toolkits are available in Fortran, C and IDL for multiple platforms. These special Toolkits contain substantial documentation. Sample DSK files are available. The full announcement (PDF) is available for download.

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