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NAIF

Announcements

(Most recent at top)

  • 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:
    http://naif.jpl.nasa.gov/pub/naif/generic_kernels/pck/gm_de431.tpc

  • 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, http://naif.jpl.nasa.gov/pub/naif/generic_kernels/lsk/, will remain effective. Separate versions for Unix/Linux/Mac (naif0010.tls) and for PCs running Windows (naif0010.tls.pc) are available.

  • 3/31/14 - NAIF anticipates hosting another "beginner's" SPICE training class sometime this Fall. We're looking into the possibilitiy of conducting this class on the USA East Coast, in Maryland, but it could end up being held in the Pasadena, CA vicinity. The class will be open to anyone insterested in developing SPICE-based software.

    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).

    There will be no charge for the class, and no restrictions on attendance--professionals, students, and commercial and foreign persons are welcome. Attendance could be limited if signups exceed the size of the classroom; once registration is opened we'll accept "students" on a first come, first served basis.

    Stay in touch for further announcements.

  • 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.

  • 11/1/13 - NAIF is now back at work on the version N65 Toolkit. This will be a huge addition to the previous Toolkits, offering new capabilities and some performance improvements for some users. It will take some time to complete N65... probably into early 2014.

  • 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.

  • 3/7/13 - Because NAIF is well behind schedule for release of the N65 series of Toolkits, we did produce a version N64 Toolkit for PC/Linux 64-bit iFort: it may be obtained here:
    http://naif.jpl.nasa.gov/pub/naif/misc/tmp/edw/tspice_ifort64.tar.gz

  • 9/28/11 - NAIF is contemplating discontinuing further support for the three Macintosh PowerPC ("Motorola chip") environments starting with the Version N65 Toolkit release some months from now. If this seems a major problem, please write to someone at NAIF explaining why.

  • 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: http://naif.jpl.nasa.gov/pub/naif/misc/tmp/edw/ticy.zip

  • 8/18/10 - A memory leak 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. This bug has been present since the introduction of Mice. NAIF has a correction for Mice to eliminate the leak. The correction will be made as part of the N65 Toolkit, but can be obtained now from this location.

  • 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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