From Boris.Semenov at jpl.nasa.gov  Tue Dec 27 08:58:46 2022
From: Boris.Semenov at jpl.nasa.gov (Boris Semenov)
Date: Tue, 27 Dec 2022 08:58:46 -0800
Subject: [Spice_announce] Announcement of updated generic PCKs based on the
 2015 IAU WGCCRE report
Message-ID: <6c626ff9-01f5-1f8e-18b5-4a5eb5e5cee5@jpl.nasa.gov>

NAIF is pleased to announce the release of updated generic PCKs based on 
the 2015 report of the IAU Working Group on Cartographic Coordinates and 
Rotational Elements (WGCCRE).

Due to extension of the Mars system rotation model in the 2015 Report 
that could not be accommodated by earlier SPICE Toolkits, this update 
consists of two files:

-- pck00011.tpc, compatible with Toolkit version N0067 or later

    http://naif.jpl.nasa.gov/pub/naif/generic_kernels/pck/pck00011.tpc

    Data in this file, other than orientation data for the Mars
    system, are usable by older Toolkits.

-- pck00011_n0066.tpc, compatible with Toolkit version N0066 or earlier

    http://naif.jpl.nasa.gov/pub/naif/generic_kernels/pck/pck00011_n0066.tpc

    Phobos orientation data in this file have been modified, and
    slightly degraded, to make them usable by older Toolkit versions.

NAIF recommends caution and careful consideration in adopting these new 
PCKs, especially for on-going flight projects and well established 
analysis activities, as some rotation models in this PCK (e.g. Mercury, 
Mars, Neptune, etc.) differ significantly from those provided in the 
previous generic PCK (pck00010.tpc)

For complete details about these new PCK files please refer to their 
internal comments.

Happy Holidays!

From Boris.Semenov at jpl.nasa.gov  Thu Dec 29 09:20:39 2022
From: Boris.Semenov at jpl.nasa.gov (Boris Semenov)
Date: Thu, 29 Dec 2022 09:20:39 -0800
Subject: [Spice_announce] New SPICE-Enhanced Cosmographia Version 4.2
Message-ID: <3f543dc3-c11d-c622-6b6e-2336eb4bbf6a@jpl.nasa.gov>

NAIF is pleased to announce availability of the new SPICE-Enhanced 
Cosmographia Version 4.2.

The Release 4.2 is focused on a single major change: upgrading the 
Python version used internally and in the program scripting interface 
from version 2 to 3. This upgrade made it possible to fix a 
long-standing deficiency -- the lack of scripting support in the Windows 
version of the program. In the version 4.2, the Python 3-based scripting 
interface is available on all three supported environments (OSX, Linux 
and Windows).

The full release announcement and installation notes are available at 
https://naif.jpl.nasa.gov/naif/Cosmographia_Release_4.2.pdf.

The Cosmographia installers are available from their usual location on 
the NAIF server, 
https://naif.jpl.nasa.gov/naif/cosmographia_components.html.

An on-line Cosmographia User's Guide updated for Version 4.2 is found at 
its usual location, http://cosmoguide.org.

NAIF recommends for Windows users interested in Cosmographia scripting 
and any other users with a preference for Python 3 to switch to the new 
SPICE-Enhanced Cosmographia Version 4.2 at their convenience.