KPL/PCK

SPICE PCK File for Tempel 1 -- 2006 Shape Model Values
===========================================================================

     By: B. Carcich and B. Semenov                 24-JAN-2023

 
Organization
--------------------------------------------------------
 
     The sections of this file are as follows.
 
     Introductory Information:
 
         --   Version description
 
         --   Disclaimer
 
         --   Sources
 
     Pck Data:
 
         --   Orientation constants for Comet 9P/Tempel 1
 
         --   Radii for Comet 9P/Tempel 1
 
 
Version description
--------------------------------------------------------
 
     This file was originally created on February 16, 2006 by Brian 
     Carcich, Cornell University. Additional comments were added to
     it by Boris Semenov, NAIF/JPL on January 24, 2023. 
     
     This PCK contains 9P/Tempel 1 rotation constants and radii derived
     by Peter Thomas, Cornell University as the result of post mission
     analysis of Deep Impact data in conjunction with version 1 of the 
     Tempel 1 shape model, which was developed exclusively from the Deep 
     Impact images and associated lightcurves obtained in 2005. Developed 
     shortly after the encounter on July 4, 2005, the model was officially 
     released in February 2006 (Farnham & Thomas 2006, Thomas et al. 2007).
     
 
Disclaimer
--------------------------------------------------------
 
     This constants file may not contain the parameter values that you
     prefer. Note that this file may be readily modified by you or
     anyone else. NAIF suggests that you inspect this file visually
     before proceeding with any critical or extended data processing.
 
     NAIF requests that you update the `by line' and date if you modify
     the file.
 
 
Sources
--------------------------------------------------------
 
     The sources for the constants listed in this file are:
 
        1) Peter Thomas, Cornell University, February 2006


Orientation constants for Comet 9P/Tempel 1
--------------------------------------------------------
 
     The inertial reference frame for these constants is J2000; this is
     the default reference frame for PCK orientation data.
 
     The epoch of the constants is J2000; this is Julian ephemeris date
     (JED) 2451545.0.
 
     The NAIF integer code for 9P/Tempel 1 is 1000093. See the NAIF_IDs
     required reading for further information on NAIF integer codes.
 
     The 9P/Tempel 1 rotation constants below were derived by Peter
     Thomas, Cornell University as the result of post mission analysis
     of Deep Impact data.

     These constants are applicable for Deep Impact Tempel 1 encounter, 
     4 July 2005.
 
     \begindata
  
        BODY1000093_POLE_RA  = (   293.8029312223    0.0           0.0 )
        BODY1000093_POLE_DEC = (    72.6186911772    0.0           0.0 )
        BODY1000093_PM       = (   252.630000000   212.0640900000  0.0 )

     \begintext


Radii for Comet 9P/Tempel 1
--------------------------------------------------------
     
     The radii provided in the keyword below are 

          a/b/c = 3.1km/2.1km/2.1km
 
     \begindata
   
        BODY1000093_RADII    = (     3.1             2.1           2.1 )

     \begintext

End of PCK file.