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| '''Example POLE.TXT:" | Here is a sample POLE.TXT: |
new_pole
Description
Updates the landmark center location (VLM), and map frame (UX, UY, and UZ) in the .LMK files. Update the .MAP files. Updates the spacecraft position (SCOBJ), camera unit vectors (CX, CY, and CZ), and Sun unit vector (SZ) in the SUMFILES and NOMINALS.
Input Files
INIT_LITHOS.TXT - Initialization file which contains the parameter PCK, which defines the planetary constants for a variety of objects (such as Bennu or the Sun). This is required for SPICE function calls.
DATA/ - Directory containing SPICE kernels.
LMRKLIST.TXT - list of landmarks.
PICTLIST.TXT - list of pictures.
SUMFILES/ - Directory containing picture .SUM files.
![/!\](/wiki/classic/img/alert.png "/!\"){kind=small}
INIT_LITHOS.TXT, DATA/, and LMRKLIST.TXT must be in the working directory.
unlike pole, new_pole does not require POLE.TXT. Instead the user inputs the pole RA, Dec, PM, OEMGA, via standard input.
Using new_pole
- Input the old right ascension (deg), declination (deg), prime meridian (deg), and rate of rotation (deg/day).
enter old RA, DEC, PM, OMEGA 86 -65 89.00000000 2010.48945
- Input the new right ascension (deg), declination (deg), prime meridian (deg), and rate of rotation (deg/day).
enter new RA, DEC, PM, OMEGA
- Input a time in UTC.
- Make sure the time is within the span supported by the kernels.
Input epoch UTC0 2018 NOV 16 13:09:54.824
new_pole generates a POLE.TXT file in which it records the new RA, DEC, PM, and OMEGA.
Here is a sample POLE.TXT:
86.60062 -65.00002 90.42707 2009.99979311
(Compiled by DL)