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 Post subject: #2) Mercury
PostPosted: Tue, 03-01-17, 1:15 GMT 
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Joined: Tue, 04-09-07, 21:55 GMT
Posts: 786
Location: N 42.38846 W 83.45456
--- Edit on 1-2-17
combined Mercury,Venus,Earth,Mars into one file

-- google docs ... sp=sharing

MD5 b90dd5d94b55e7f57a129f6b1f309450
SHA1 d44d71ce5beb17bf92464a702eeee1f22f09b6ec
SHA256 f1b551574b889441c0fee398a51a3ced4b7176bd44627be2f2eb694f65e75f15

( the below code is out of date and only an example
 Replace "Mercury" "Sol"
   Texture "Mercury.7.08.ctx"
   Radius 2440

   # Before SPICE

     BodyFrame { EquatorJ2000 { Center "Sol" } }
     Ending   "1550 02 27 00:00:00.000"  # add 2 months for orbit drawing
     CustomOrbit "vsop87-mercury"
     CustomRotation "iau-mercury"
   # Spice
     OrbitFrame { EclipticJ2000  { Center "Sol/Mercury_bary" }}
     BodyFrame  { EclipticJ2000 { Center "Sol"              }}
     Ending     "2649 11 25 00:00:00.000"  # less 2 month for orbit drawing

       Kernel  "de430.bsp"
       Target  "199"
       Origin  "1"
       Period   0.2441  # earth years
       BoundingRadius 1e10

     #CustomRotation "iau-mercury"
       Kernel    [ "pck00010.tpc"  "naif0011.tls"  ]
       Frame     "IAU_MERCURY"
     # After SPICE
       BodyFrame { EquatorJ2000 { Center "Sol" } }
       CustomOrbit "vsop87-mercury"
       CustomRotation "iau-mercury"
   Albedo            0.06

You already download the rotational model and leap second files from this thread

-- de430.bsp -- ... k/planets/
-- pck00010.tpc --
-- naif0011.tls --

the barycenter ssc is needed BEFORE planets can be added

you will notice that i am using the default celestia orbit and rotational model for the BEFORE and AFTER "spice"
for the planets it is almost spot on you might notice a small shift or turn but not much
the real BIG changes are with the moons ( but not "The Moon" )

a note of WARNING!!!!!!!
the times for "Ending " for the pre and spice sections
the pre spice has 2 months added for the orbit drawing and the post sipce is less 2 months
BE VERY CAREFUL on the days and months , not every month has 31 days
there is 28/29 , 30 ,and 31
if you list too many days you WILL get an error
Feb 31 will give you an error

WARNING - for Linux and maybe Apple users ( Apple is an unknown at this time )
this file needs to be part of a single "SolarSystem.SPICE.ssc file
the c-Language read order is in affect on these Operating Systems

Last bumped by John Van Vliet on Tue, 03-01-17, 1:15 GMT.

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